So I have been asked surprisingly a lot lately about #gnome extensions and which I recommend newcomers. The honestly I recommend none. Even on #ubuntu.
I recommend that you remove all extensions and try to use Gnome as is for the first month maybe even two.
Instead take the Gnome Tour, learn Gnome. Then if you think you need any extensions after a month or so you can add them back. After years and years running with very few extensions