If you want to start a new git project, first check that the . git folder already exists where you will initialize your git with the command ls -la.
If there is no folder just start the project. git init
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If a git project already exists:
To restart a git from scratch, first you need to remove the previous git with the command rm -r .git.
Done this, then just create git normally: git init.
To add all files to your Stage I advise using git add . instead of git add * and if you have deleted files that also need to be versioned use the command git add -u to add all deleted files to Stage or use git add --all to add all the files (new, new, new, new) to the Stage.
Then just commit and send to your repository.