There are a lot of conflicts on which cool looking things for
SW don't go together. So research will for sure be your friend.
Starting with the size you will be setting up, and then work on a stocking plan, and also not all creatures and coral type things go together or next to each other either, so , so very much to learn!!!
Start looking at the things at the
SW local fish stores (
lfs) and see which ones you like the most.
You can't touch all of them with your bare hands either. Just be very careful and learn everything you can!