Mastering QuickBooks Online (Udemy.com)
Become An Expert QuickBooks Online And Learn How To Keep And Maintain QuickBooks Records For Perfect Accuracy
Created by: Mark Smolen
Last updated September 2026
Our take
Based on the ratings of 15,074 students and a sample of their written reviews. No course pays to be reviewed.
Mark Smolen's course is a five-hour walkthrough of QuickBooks Online. It starts with setting up a trial account, then moves through invoices, sales receipts, bills, deposits, petty cash and the main reports. It also shows how to find and fix data entry mistakes. The course description targets small business owners, people chasing an office job, and bookkeepers who want to move clients onto QBO. It has 15,074 reviews and a 4.6 rating, so plenty of people have been through it.
Reviewers like the teaching. They say Smolen explains things in detail, the pace is easy to follow, and the exercises are set up well. One self-described novice said it helped them understand how QB works despite feeling lost at first. The complaints are consistent too. Several low-star reviews say the screens did not match the trial version they got, one lesson relied on a button that was missing, and the trial link was dead or led somewhere different. Others found it slow and repetitive, and one reviewer already used QBO and learned little.
The course page lists a 2026 update, but the reviews we looked at date from 2019 and 2020, so check how closely the current screens match before committing. For a beginner who wants patient, detailed instruction, it is a sensible pick. Someone already working in QBO will probably find it too slow, and a short feature tour would suit them better.
Pros
- Reviewers say Smolen explains each step in detail and keeps the pace easy to follow
- Covers setup, invoices, sales receipts, bills, deposits and petty cash in one run
- Exercises and tests mimic real on-the-job problems, and reviewers call them well set up
- Teaches how to find and fix data entry mistakes, not just enter transactions
Cons
- Many low-star reviews say the screens and menus differ from the videos
- Some students hit a dead or missing trial link at the start
- Slow and repetitive for anyone with computer or QBO experience
I am enjoying this course very much and it is moving at a pace which I find easy to follow. Everything is clearly explained and the visuals are perfect.
Fits true beginners best. No prerequisites are listed, and one reviewer already using QBO found it too basic.
Featured in our guide: The 10 Best Finance and Accounting Courses on Udemy in 2026
What you will learn
- How To Set Up A QuickBokooks Online Account
- Navigate Through And Identify Everything On The QuickBooks Online Screen
- Enter / Record Every Type Of Transaction That Every Company Could Need In To QuickBooks Online
- Utilize And Customize The Most Important Reports In QuickBooks Online
- Find And Fix Any QuickBooks Online Data Entry Mistake
- Find Anything Ever Entered In To The QuickBooks Online Account, Who Did It, And When
- Use Problem Solving And Reasoning Skills To Overcome Real Life "On The Job" Challanges, When Using QuickBooks Online
How it compares
Against the other 200 rated Udemy courses in Accounting on CourseDuck:
- Rating4.6 out of 5higher than 69% of them
- Reviews15,074#4 of 201 by number of reviews
- Length5 hoursshorter than 59% of them
- Last updatedSeptember 2026more recently than 93% of them
Course Description
Who this course is for: Anyone Who Needs To Use QuickBooks Online To Manage Their Business Anyone Who Wants To Get A Good Office Job Using QuickBooks Online Anyone Who Has Accounting Or Bookkeeping Clients That Could Be Put On QuickBooks Online Anyone Who Wants To Be An Expert In QuickBooks Online In A Very Short Time
Instructor Details
- 4.6 Rating
15,074 Reviews
Mark Smolen
I have 2 decades of experience teaching Computerized Accounting. I have taught QuickBooks at A.S.A college in Manhattan New York. I have made my lessons available to job training schools for adult education and have helped place hundreds of students in good paying jobs using QuickBooks and other software that they learned in my class. I am a permanently licensed teacher by the New York State Education Department. I am also a Certified QuickBooks Pro adviser for over a decade. I have made these videos by determining what my clients needed. I wanted to help anyone using QuickBooks be prepared for the real-life, hands-on challenges that come with mastering the bookkeeping function of any company. I will prepare you for real life QuickBooks situations that can be challenging or frustrating if nobody shows the tips and tricks that will make using QuickBooks a fun task I enjoy helping students turn frustration in to a feeling of comfort and satisfaction with QuickBooks. I'm always available to my students when they need me.
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Reviews
By Tina Cegers on 11/22/2020
Step by step information (great!).
By Katie Spiese on 11/15/2020
This course seems very old or aimed towards somebody with no computer skills. Many parts are unnecessary or redundant.
By Christa Stine on 11/8/2020
Very informative and helpful to a beginner like me! :)
By kimberly Rigler on 11/8/2020
The gentleman teaching has a clear voice and uses precise direction. definitely a good fit.
By Jaishree Rajpurohit on 11/8/2020
yay it matches my level of expectation ..
By Maurise Nowlan on 11/8/2020
Very informative course. Very detailed explanations and examples. will recommend
By Kim on 11/1/2020
Yes. I already have online account but it's a mess. will convert it after this course.
By Jamie Tarlier on 11/1/2020
Not worth it. You can learn more on YouTube.
By Tammy Levasseur on 10/27/2020
Good so far. Simple to understand. I'm finding it a bit laggy but that could just be my internet speed.
By Emi Bias on 10/22/2020
Disappointed in the lack of all banking features discussed also the course shies away from major features such as card payments, sending invoice from within QBO, payroll and most importantly, Taxes. But, if you want to know primarily what report does what, then this is the course for you. All in all, it's a good BASIC course for understanding customer and vendor transactions.
Unfortunately, I now have to spend more money and more time finding a course that'll help me with the vital subjects of banking and taxes.
By Ana G Ramirez on 10/21/2020
Concepts are clear and easy to follow!
By Oscar Rodriguez on 10/20/2020
simple language
Quality Score
No CourseDuck member has rated this course yet. Taken it? Give each part a thumbs up or down.
Overall Score : 92 / 100












