Also find a local reef aquarium club in your area. I'm certain there is one in philly or close to philly. You will find a lot of good one-on-one advice from other hobbyist. Hopefully you can see some of their tanks in person and learn a lot, which is very different than seeing pictures online.
You could do the same thing on this forum if you choose
Best advice is to google search the good AND bad reviews of each equipment you buy and each step you take in building your aquarium. I find it very interesting and fun to learn, which helps a lot.