How to install plugins from GitHub. (I don’t have any coding knowledge)
If they are not yet in the community plugins type ‘obsidian brat’ into google and read the stuff about brat - Beta Reviewers Auto-update Tester. Once you install that plugin from the community plugins, it’s called ‘Obsidian42 - BRAT’ in the list, you can add the GitHub URL of the beta plugins you want to BRAT to install them for you.
Use ctrl/cmd-p to open the command palette, search for brat then select ‘Plugins: Check for updates to all beta plugins and UPDATE’ every so often will update them.
Hope this helps.