Do lots of reading and like it was said above take things slow ...it will come around. Look at dc vs a.c. pumps, sand vs crushed coral, live rock vs dry, canister vs sump, led vs traditional, I'm saying this because I was in your exact shoes 8 months ago and there was a lot of research I didn't do before I started. Now I'm doing changes on the fly. I.e. switching to dc pumps. I am very new to this too but feel free to hit me up with any specific questions. If I don't know i will tell you. Welcome to the madness you will love it