When is the right time to start learn Git?How to learn Git ?

Answer 1

Right after you saved your first code, you need git.
Learn git from official site https://git-scm.com/doc
https://git-scm.com/docs/gittutorial

Answer 2

You can learn it right away. It will only help in future.

Answer 3

https://www.sololearn.com/discuss/369394/?ref=app

Answer 4

At anytime. It's best to start using it as soon as you start building or practicing your own projects. It's also great if you use multiple computers.