Cheat sheets
The essentials of a course on one page
Every course has a cheat sheet: syntax and commands at hand, linked to the course.
Available
Even after you finish a course, details slip away. A cheat sheet puts the key points of a course on one page: SQL, Python, Git, React, TypeScript, Docker and more.
From a cheat sheet you are one click away from the course that explains each topic in full. Cheat sheets are open without signing up.

What you get
- One page per course
- Syntax and commands in tables
- A link to the full course
- Open without signing up
Where to find it
Try it on your own lessons
Sign up for free to unlock Ask and practice. Paid plans will be available in the mobile app.
Related features
- Short lessonsEach lesson explains one thing in plain words, with a code example and a task at the end.
- Lesson quizzesA short quiz after the lesson shows what you understood and what is worth reading again.
- Career articlesArticles on levels from junior to principal, salaries, the engineering manager role and tools you use at work.