The only stupid question is the one you don't ask! I asked all sorts of newbie questions, and it turns out that every expert in here had the same questions at one point! Welcome to the salty club! It's addictive.
Though by no means am I an expert, I gotta say, I wouldn't recommend seahorses for a beginner. My understanding is that they are far more demanding than the average saltwater fish. I'd give yourself some time to get the hang of the whole SW
thing before trying seahorses, but that's just me!
I intend to have a seahorse tank someday, but I'm giving myself lots of time first.