How to use Git in php stotm if the site is already published on a hosting (not github)?

Question

git

I use php storm and web srotm, I would like to know how to compress and create branches, etc., otherwise I'm tired of doing a backup of the site once a week (700mb extra). The site is hosted. When they gave me FTP access, I downloaded the site folder and that's it, I edit the code just press CTR + S . And this is all my knowledge)))

Answer 1

It's simple, sir
https://git-scm.com/book/ru/v2
If you read this and have questions about git in the storm, come.