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Complete WordPress Developer Course - Plugins & Themes (Udemy.com)

Learn how to develop WordPress themes and plugins. Includes React and Gutenberg development.

Created by: Luis Ramirez

Last updated April 2025

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What you will learn

  • Build a fully functioning WordPress theme and plugin
  • Build websites for any business and audience
  • License your theme and/or plugin
  • Understand the architecture of a plugin and theme
  • Understand the WordPress core and it's functions
  • Fully Understand WordPress's API and how to interact with WordPress and its system
  • Query the Database and create tables
  • Comfortably navigate around the WordPress core
  • Confidently use the command line and learn basic commands.
  • Learn the latest features in JavaScript including ES6 modules and variables
  • Improve your workflow using Babel and Webpack
  • Create, manage and process admin forms.
  • Create custom post types for special kinds of content
  • Build custom Gutenberg blocks with React, Webpack and Babel.

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Quality Score

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Overall Score : 98 / 100

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Course Description

Hello! Welcome to the WordPress development course. This is the most comprehensive and effective course on WordPress development around. This is the only course you'll ever need to learn WordPress development. 

WordPress currently holds a majority of the market share on the web. WordPress is an absolute dominant force and its popularity continuously grows. One of the best things about WordPress is that it's easily extendable. There are thousands of plugins and themes available both free and premium.

In this course, I will teach you how to create your very own plugins and themes. This course was designed for those who truly want to master WordPress inside and out. There is no stone left unturned. This course will help make you into one of the most competitive WordPress developers out there. You will be able to develop custom plugins and themes no matter how hard the task is.

You can expect high-quality and fresh tutorials. This course uses the latest versions of software development including PHP (8.x), and MySQL/MariaDB (8.x) . 

Here is an overview of what you can expect to learn.

  • Take a static HTML template and convert it into a fully functioning WordPress theme. 

  • Write code that scales and learn the best practices for writing clean, efficient, secure, and reusable code. The WordPress coding standards are covered from PHP to JavaScript and CSS.

  • Properly take advantage of the template hierarchy system and create your own custom templates for more unique designs.

  • Build plugins that extend the core functionality of WordPress.

  • Develop custom post types for content that give you the flexibility to curate content you want to. Apply metadata to your content and display everything on the front end.

  • Learn about the various methods for creating your own custom admin forms and processing the data securely.

  • Other topics include licensing, translations, security, authentication, full-site editing, block development and so much more!

  • The APIs that are covered are the following: Database API, HTTP API, Metadata API, Options API, Plugins API, REST API, Rewrite API, and Settings API.

  • On top of everything, you will also learn how to create your very own Gutenberg blocks. Take advantage of the newest feature that comes bundled with WordPress 6!

  • Not confident with your React and JavaScript skills? That's completely fine! The skills required to build efficient and scalable Gutenberg blocks are covered in this course. You'll learn how to use Node, Webpack, Babel, and React

In a nutshell, we'll explore the various WordPress APIs and how they should be used. The developer documentation is filled with examples and each page is quite lengthy. WordPress development doesn't have to be hard to learn. The biggest mistake most coding tutorials make is expecting someone to learn simply by imitating others' code. Real-world situations are never exactly like the tutorial.

I believe the best way to learn is to understand how a tool works and what it does for you, look at examples, and then try it yourself. That's how this course is built, with the goal to help you both learn and understand WordPress.

Take the leap into Gutenberg Development

This course goes beyond the simple WordPress plugin development and WordPress theme development tutorials. You will learn how to create Gutenberg Blocks for WordPress as the back end. The CEO of WordPress, Matt Mullenweg, has urged developers to start learning JavaScript deeply

You will first learn the basics such as the command line and ES6. You will be caught up with the latest standards of JavaScript from modules to destructuring and so much more! Tools such as babel and webpack are also explored and implemented with our code. We will build a functioning WordPress Gutenberg block with React

Build components to separate your code. All this knowledge is right at your fingertips!

Why am I qualified to teach this course?

I've been developing sites in WordPress for over 10 years. I know all the tricks to work with WordPress. I don't fool around. You will learn all my techniques and teach you the exact process I go through. I've sold commercial themes and plugins with over 1000+ sales worldwide. I know what it takes to create stuff that works!

There is no useless information here in this course. It's all 100% high-quality content and nothing less. I guarantee you will absolutely love this course and see real results. You'll have the skills and confidence to build your own custom themes and plugins your clients will love. You'll be able to take on bigger projects for more money. Don't believe me? I offer a 100% refund within 30 days. There is absolutely no risk involved!

Don't be the one that gets left behind! Enroll and start learning today

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Instructor Details

Luis Ramirez

Luis is a software engineer with a decade of experience in web application development. He has spent his career architecting solutions that are reliable, battle-tested, secure, scalable, and performant. As an engineer, it's always a priority to develop applications that provide a fluid user experience.

Most courses will teach you the "how," but never the "why." Luis believes that understanding core and critical concepts in programming will make you a competitive engineer in today's market. He's here to assist you in this journey by demystifying low-level concepts that other instructors may gloss over.

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Reviews

4.9

2,983 ratings on Udemy

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By Tran Nguyen on 2/21/2026

so far so good, very extensive resources. i will update later. thank you for the backend section, it is really rare to come across this materials for wordpress. if anyone have problems with the 'load_plugin_textdomain' function, then you can try 'load_textdomain'. I run wordpress on docker and load_plugin_textdomain just doesn't work for me.

By Jacob O'Donnell on 12/22/2025

If you want to learn FSE and native Gutenberg block development, this course is a very good introduction/overview. Nothing for the most part is outdated per se, but I do think it is getting to the point where the whole thing should be reshot. I also would like a section on the Interactivity API. I feel pretty confident for build FSE sites now. I also very much liked the folder structure that was shown in this course.

By Olexandr Korneli on 5/24/2023

First, I would like to say thank you for the great work. This course has helped me understand how WordPress works. I have gained a lot of information about PHP, React, and other technologies. Please don't stop and create new content where you explain the development process. Also, I have a suggestion for you: add a link to GitHub at the end of each video lecture. This would help us understand the mistakes I made during the learning process.

By Sajana Boopathi Herath on 1/8/2023

Complete course on Wordpress Custom theme and plugin development. I'm glad I decided to go through this course instead of following free videos/articles online because what I learned here is far more comprehensive and Luis leaves no stones unturned compared to other sources I went through. But I feel this is not really a complete beginner course, you should have at least few months on experience on building projects understanding fundamentals on programming. I highly recommend this course to anyone who wants to learn custom WordPress development.

By Aleksandar Novkovski on 10/26/2022

This is probably the most value I have ever received from purchasing a course. And I've bought tons of courses all over the web on many topics. I'm only 70% done and it's already blown past all of my expectations. == Some of the pros: - I was impressed with how the author obviously spent a lot of time trying to make sure the real-world projects we build are a good way to learn all the concepts and techniques we will need in the real world -- For example, I've been doing JavaScript for years, but I picked up a few tricks I didn't even know about. And it's clear he included them to add as much value to course-taker as possible. This is on top of all the stuff he shares on the WordPress side of things. He will often show multiple ways to do something, just so you have more options. I already took a couple of WordPress courses and trainings before taking this one. And yet I learned so much more in this course. === Some of the cons I see some people unhappy with the speed and that he does things off camera or that certain parts are sped up... But I personally don't mind using the pause button and having the pdf open on the side. I think that the author decided to go this route instead of making the course 100 hours long. In fact, one reason I was surprised with how much value the author delivers is because I wasn't expecting it based on the number of hours. I was expecting the course to deliver a similar amount of information as courses with a similar number of hours. However, he actually teaches you like 3x more things in the same number of hours as others... That comes at a "cost". It means he edited out any and all unnecessary and repetitive typing or coding. And yes, there are even a few cases where he will quickly change folders or screens, too quickly for you to catch it if you're not paying attention. But I really don't think that's such a huge deal, considering how much value I've gotten. == My opinion All in all, these things are not an issue, as I don't need to watch the person typing slowly and me following along in real-time. I have no issue with hitting the pause button or rewinding if I missed something. Or later in the course using starter code where it makes sense. And it actually makes perfect sense when and how he gives it. As the course progresses we use more and more of the provided code or we are asked to do stuff on our own, as he does it off-screen or it is sped up in the video... It is not possible to do or follow everything in real time, so you will use the pause button quite a lot. But again, he only does this for stuff that has already been done, learned or practiced earlier in the course at a slower pace. I really appreciate this and am surprised others thought of it as a disadvantage.

By Andy Brooks on 10/6/2022

I found this course really helpful in gaining a better understanding of creating multiple blocks within a single plugin. I have also learned that there is a lot you can actually do with the FSE side of WordPress as have stayed away from it before this course. I would love to see a section on using OOP programming for setting up the plugin files and also on using WordPress coding standards as this course is quite advanced and this would add an extra layer of advanced development.

By Omar Bin Gias on 5/23/2022

This course is absolutely worth the money. The instructor is also great. I would love to see if there were more tutorials on woocommerce development. Anyway, I would recommend this course to anyone who knows HTML, CSS, JS, and PHP and wants to become a Wordpress developer. Thanks again for the great contents :)

By Michael Stein on 9/18/2018

I am updating my review to 5 Stars. When I originally purchased the course it was full of great information, but the narrator was slow and monotonous. The course was painful to follow. I actually used it as an example for a friend, of a course that while clearly spoken, was not bearable. When I opened the course to sho him, the entire course had been updated with new content and a new narrator. It is 1,000% better, and I am very excited to finish it now. Course has been updated several times ... I am going through it, in its entirety for a third time! Really loving the updated content !

By Jennifer Lewis on 7/20/2018

I'm still completing this course, but have arrived at the stage where I am so infuriated by my experience of trying to follow what is happening that I felt compelled comment. It all started out so well... But at some point (can't exactly remember where) I got the distinct impression that he became pressed for time, and began delivering the content in a style betraying a simply breath-taking arrogance. He even manages to thwart your attempts to use the rewind button by providing general commentary of his code, while simultaneously fast-forwarding code and switching to a different file BEFORE you can see what he has written in the previous one. I challenge you to take a look at the later lectures and see for yourself! I am in no doubt that the instructor knows his stuff. However, I am also in no doubt that he knows not how to take his passengers along with him on his journey.

By Fabio Pacifici on 11/18/2017

This course is great, Luis did a brilliant work providing lots of useful resources that will definitely become a great asset for any one taking this course. I liked how Luiz works, his workflow is very clear and refactoring oriented. The bonus sections related to the single page app provides even more stuff to drive you insane. It is a lot to digest but once you do you won't be disappointed! Thanks Sir!

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