Your getting good advise so far. The best thing you can do now, because you are just starting out is research which means read read read and ask lots of questions anytime anything seems weird or confusing. The people here are great. 150gal would be a lovely tank but very expensive lol.
Take a look at some pictures of fish and coral and see if you like any of those. Make a list of things you think look cool then research those things and see if they are good to keep with eachother and narrow down your list.
then When you have an idea of what you want research to see what will keep them alive and happy. Lighting, foods, flow, additives, etc
Do you want to keep things simple or high tech and automated? That in itself is a whole other experience of reefkeeping.
Do you just want fish FO, fish with live rock FOWLR or a reef, etc. Again look at some pics and think about YOUR LIFESTYLE and what you can reasonably take care of. If you have a hectic life then you probably want everything automated OR go low tech and hardy and understock. If you have lots of time on your hands then maybe something a little more challenging is for you.
Take things really really slow. I mean slow. Bad things happen very quickly in this hobby and good things take time.
It took me 2 years of research and just looking around before i decided to go salty. So far I have the tank and its been nearly a year lol. I have yet to buy things for myself because money goes towards other things LMAO. But yea Take it slow.
read read read
happy reading

and hopefully soon happy reefing
