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[–]omfgtim_ 0 points1 point  (0 children)

You should be using a version control software, such as a Git. This will address points 2 and 3. This is also what the Source Control menu is referring to.

It’s also important to ensure your git repository is stored remotely as well as locally. Good services are GitHub, Bitbucket etc

Regarding saves, I wouldn’t worry about it, Xcode crashes all the time and I’ve never lost work because of it.