Very nice bonus! Also Welcome aboard!!
Couple of things.......is the tank currently set up? If so what is in it?
Things we will need to know in order to help you out:
1...Does it have a protein skimmer?
2...Does it have a sump?
3...What sort of water circulation does this tank have, (in detail)?
4...What sort of lighting does this tank have?
5...Most important of all, what do you want to keep, a fish tank or a reef tank? To explain the difference, a fish tank has only fish and some hardy invertebrates in it such as shrimp and crabs. Thes tanks are less maintenance involved, can be very beautiful, and are usually less expensive. Reef aquariums contain living corals and sometimes anemones, are much more challenging, and to many much more rewarding, are more maintenance involved, and are by definition, more expensive. The corals in a reef tank are much more delicate and require precise water conditions, (which is where all the extra money goes to..maintaining those precise water conditions). Many people, (myself included) feel that a properly set up and maintained reef tank, is more entertaining than television. Thats not to say a FO, (Fish Only) tank cant be similarly appealing, its all up to you.
If you can answer these questions we can help you out quite a bit more.
Also I reccomend purchasing a copy of "The Concinetious Marine Aquarist", by Robert Fenner. Its a great book for both beginners and intermediate aquarists alike. You can usually find a copy on Amazon for about 35$ US.
Hope that helps,
Nick