Welcome to Hive Nike, and great to see another Brit come on board. I see Steve has already dropped you some tips to start off. If you're looking for more newbies tips, I did something a while ago based on inputs from over 130 seasoned users here, it might help as well.
https://peakd.com/hive-174578/@livinguktaiwan/3-things-newbies-should-do-in-their-first-week-on-hive
In terms of communities and stuff, there are quite a few dedicated to photography, this one has a lot of good stuff (plus some wannabes as well 😬 )
https://peakd.com/c/hive-194913/created
Hope you enjoy your Hive!