A one-page GitHub reference, every line explained: repositories, README markdown, branching, authenticating with a token, clone versus fork, issues, pull requests and the mistakes to avoid.
git is the version control; GitHub is everything built around it, and most of what trips people up lives in that second layer. Tokens instead of passwords, forking when you cannot push, keeping a fork current, writing a pull request somebody will actually review, and cleaning up the branch afterwards. This cheatsheet puts the daily commands next to the collaboration habits on one page, each line annotated with what it does and why. Keep it open while you work, or save the image and pin it nearby.
Hope this helps.
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