Learn how to rename branches in Git the right way. According to the documentation, to rename a local branch in git there is only one command: git branch -m "new-name". But learn the right convention.

The git fetch command can be used to download all commits from the remote repository without affecting your local code. Basically, git pull does first a git fetch followed by a git merge origin/master.

Learn how to clone JavaScript objects efficiently, be it a shallow copy or a deep clone of the object.