Free · daily · job-ready
Learn real computer science,
one minute at a time
Write your first program in the next four minutes, right here in this page — no sign-up, nothing to install. Then build the real project in a repository of your own, with our AI reviewing every commit like a senior engineer looking over your shoulder.
26 exercises · about 209 minutes in total · stop after one if you like
Watch the 60-second lessons
One real computer-science concept a day — from hardware up to running code.
Open the YouTube channelHow it works
Watch. Practise. Build. Get reviewed.
STEP 1
Watch
One real concept a day, in 60 seconds — on YouTube, Instagram, and Facebook. From how a transistor works to your first C program. Free, forever.
STEP 2
Practise
Short exercises that run in this page: write the code, press Run, see what it does. 26 of them across C and Python, each one preparing you for a specific project. No account, nothing to install.
STEP 3
Build
Then the real thing: a project with a brief and a rubric, in a private repository set up for you. You write all of it — the exercises were the rehearsal.
STEP 4
Get reviewed
Our AI coach reads your commits and writes back: what is correct, what is fragile, what a reviewer would ask. Plus viva questions that check you can explain it.
Start here
Write C before you commit to anything
26 short exercises that run in your browser. You write real C — pointers, arrays, bit manipulation, argv — and real Python, against a customer’s messy data. The runtimes stop on the mistakes a real toolchain lets through, in plain English: reading memory you never wrote to, running off the end of an array, an assistant citing a policy that was superseded a month before the claim. They are teaching runtimes, not the compiler or interpreter your project uses, and they say so on every screen.
Start free
Your first project costs nothing
Sign in with GitHub and we set up your first project from the C & Systems Programming (Zero to the Kernel) track — the same track our video series and the practice exercises build toward. No payment, no card, no typed usernames. All you need is a free GitHub account.
- ✓ A private repository with the brief and the rubric inside
- ✓ Daily AI code review on every commit
- ✓ Viva questions that prepare you for real interviews
- ✓ A public profile at the end that shows the work itself
How the repository works
- ·It is created inside the TechMonster organization on GitHub and you are invited to it — it is not created under your own account.
- ·It is private: you, and the people reviewing your work, can see it.
- ·Your commits are made under your own GitHub identity, and `git clone` gives you a complete copy, history included, that is yours to keep.
Plain words
What “reviewed” means here
Three different things get called the same word across this industry. We keep them apart, because they are worth different amounts to the person reading your profile.
- Checked
- Your code was run against tests and the results are recorded. That is what the practice exercises do, in your browser. It proves the program behaves, not that you understand it.
- Reviewed
- Your source was read and written about — correctness, structure, the things a reviewer would raise. On the project this happens as you commit.
- Explained
- You answered questions about your own code — why this approach, what breaks it, what you would change. It is the part an interview actually tests, and the part nobody can do for you.
Finishing exercises is not a qualification and we do not present it as one. What we publish is the work: the commits, the reviews, and your answers.
Real curriculum, in the open
This is not a video course
Behind the lessons is a full engineering curriculum: 24 specialization tracks and 1018 hand-authored projects — from C and systems programming to AI/LLM application engineering. Students finish with a public profile that shows the work itself — anyone can read the commits, the reviews and the answers, rather than take a certificate’s word for it. See a sample profile on GitHub.
Ready for the full journey — coaching, interview prep, and a track matched to your target role? Explore the Career Coaching Program.