As a sole developer (for now), how should I be using Git? [closed]

Question

I have multiple projects on Git that I eventually want to bring others into. However, right now it's just me and I use Git and GitHub very simplistically: no branches and basically just using the commits as a backup to my local files. Sometimes I'll go back and look at previous versions of my files for reference, but I haven't needed to do any rollbacks to this point, though I appreciate the option should I need it in the future.

As a sole developer, what Git or GitHub features could I take advantage of that would benefit me right now? What should my workflow be like?

Also, are there any particular practices that I need to start doing in anticipation of adding others to my projects in the future?