The Complete Regular Expressions(Regex) Course For Beginners (Udemy.com)
Regular Expressions (Regex) for Java,Linux,JavaScript,Python or other languages, with 30 illustrated exercises/examples.
Created by: George Sonora
Last updated June 2026
What you will learn
- Learn Regular Expressions(regex) - A must have skills for an IT professional or a data scientist today in today's world.
- Understand the core concepts. Once you understand the core concepts, regular expressions(regex) are a piece of cake!
- Once you learn the basic technique, you can apply your knowledge of regex to any programming language like Java, Python, JavaScript, Linux command line etc.
- Avoid rote learning, and follow beautifully designed illustrations to understand the core techniques of regular expressions(regex).
- 30 hands on examples; Each example comes with a step-by-step solution, with graphical illustrations.
- Follow a well defined step-by-step process , exclusively designed by yours truly, which will enable you to create, use and apply regular expressions(regex) in any scenario that calls for it.
How it compares
Against the other 1,182 rated Udemy courses in IT & Software on CourseDuck:
- Rating4.7 out of 5higher than 86% of them
- Reviews8,000#58 of 1,183 by number of reviews
- Length3.6 hoursshorter than 65% of them
- Last updatedJune 2026more recently than 78% of them
Course Description
Regular expressions(regex) is a moderately difficult topic to grasp, as well as teach. It is really important that you grasp the core concepts thoroughly. Once you get the fundamentals right, regular expressions(regex) will come naturally to you. I struggled to learn regular expressions(regex) myself a couple of decades back. I completely understand the pain points. I have seen tons of free youtube videos on regular expressions(regex), but they all fail in something fundamental. They do NOT care about getting the basics right. I have taken immense efforts to prepare this course material. Each and every concept, each and every exercise, has been meticulously planned in such a way that it sticks to your brain easily. I have created graphical illustrations wherever possible to drive home the point. Each of the 30 examples come with graphical illustrations on how the regex techniques are applied in a step-by-step way, to come up with a solution.
I teach regular expressions(regex) using the POSIX standard. I have done so because the POSIX standard is followed by ALL regex engines. So if you know how to apply the techniques that you learn from this course, you can play around with regular expressions(regex) in ANY programming language of your choice. You could even try it out in Notepad++ (Yes, Notepad++ comes with a basic regex engine.)
I have hands-on sessions for ALL the 30 exercises in this course. Even if you are not familiar with the programming language, you will be able to follow it easily and apply it to your case.
I have kept my voice narration to a very slow pace on purpose. You can put me on 1.5x or even 2x speed on the Udemy player, if you think I am slow.
Something else that is special about this course - The subtitles are hand-scripted and accurate. I have even checked the timings to guarantee accuracy. Most courses come with subtitles that are auto-generated using a Speech-To-Text Engine, the accuracy of which is fairly low. But not mine! I have taken pains to script my course to perfection and include the subtitles too. So if you are at work, and you want to put me on mute, please feel free, although I would like you to hear my voice narration. If you want to put me on mute, just enable the subtitles in Udemy and play!
Instructor Details
- 4.7 Rating
8,000 Reviews
George Sonora
After graduating with an engineering degree in Computer Science , I stepped on the IT bandwagon in the 1990's and boy, what a ride its been! I have laid my hands on almost all facets of IT from operating systems, programming languages, algorithms to Cloud Computing, AI & ML. I am an evangelist for effective teaching methodologies. My focus is ALWAYS on getting the core concepts right, and on doing through learning. IT is all about hands-on experience. All my courses are well illustrated. I hate reading through slides as I have been a victim of rote learning myself. Ever since I took to teaching, I have tried to take the monotony out of learning, and tried to make it fun, colorful and exciting. Other than coding, and teaching, I like to socialize with my students. My response to your queries is just a few hours away!
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Reviews
By Josh Levine on 8/29/2026
What an amazing course and a great way to learn regular expressions. The challenge had some stuff missing from the course material, but that was easily solved with some quick Googling. Very well done and I highly recommend it.
By Md Sameer on 6/19/2026
Very Good Course to understand how regex works. Practicing more while following course will help a lot. One suggestion is add more quizzes and problems for learners to solve by themselves. Really appreciate the effort taken in creating such a great course.
By Petr K on 6/14/2026
Thank you for a great beginner course on Regex. I had some basic knowledge but needed a refresher and I have also learnt a lot. I appreciate the detailed breakdowns, it helped me realize how to search for the patterns, think about them and how to work with them. The real life examples were very good and helpful. Also thank you for the captions, not really needed as your pronunciation was very good but still good to have them. The only thing I would recommend from my point of view is not using the same sentences and specific parts repeatedly. When I heard them again and again, I had to fast forward the videos. Also a small recommendation for people who doesn't use Linux or Java, if you want to practice the Regex and see everything nicely coloured and clarified, try using for instance regex101.com. Thank you so much.
By Todd Campbell on 4/28/2026
It was a great introductory course to regular expressions. The instructor's material was easy to follow and understand. I can now use these skills in my SQL programming and Excel worksheets to solve various problems I have with text fields.
By Omar Gudiño on 1/6/2026
This course is good enough for learning about Regex, also you can practice without having linum installed, just using the VSC, I learned a lot regarding this topic, looking forward use this in my work, very recommended.
By Kt Ten on 12/29/2025
Great course for beginners - instructor is knowledgeable, professional, clear and concise in explaining new knowledge, in addition examples to practice new skills are very easy understand and try on your own.
By Kirandevraaj on 12/4/2025
to be honest, this was the first time I wanted to learn regex with full interest. previous attempts had failed, as i couldn't understand this complex topic. this course laid solid foundation. i went through this course first, and then practiced more from chat gpt & gemini. Now i can confidently write regex statements. thank you George Sonora. you put an end to this long chasing journey. highly recommended to anyone finding difficulty in understanding regex. in 3.5hrs,you could easily understand about regex
By Mayur Patil on 10/26/2025
The course was very well prepared, as a beginner it really helped me in understanding the logic and nuances behind the regex symbols and practices. I will recommend this course to everyone.
By Babatunde Yusuf on 10/16/2025
The instructor is patiently delivering knowledge with words that are carefully chosen to convey exact meanings & message to his audience. He is obviously speaking from a place of extensive knowledge. I appreciate the understanding of the subject matter he is passing on to me.
By Srinivasa Chowdary Maddipati on 9/27/2025
You are following the same template in all the courses, which is kind of repeating or extending the time. Also better to give some practice examples to try it out.
By Rick Miller on 12/27/2020
yes, great match for me thus far.
By Eu Leugnio on 12/20/2020
The topics are broken down into small, easy to consume videos
Quality Score
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Overall Score : 94 / 100







