Start here https://nektony.com/blog/mac-home-folder and here for a good tip https://www.cnet.com/how-to/how-to-find-your-macs-home-folder-and-add-it-to-finder/

Then if interested read this to get familiar with MacOS folders https://support.apple.com/guide/mac-help/folders-that-come-with-your-mac-mchlp1143/mac