Hi Keith and welcome to TRT!
Check out the
http://www.thereeftank.com/started page for tips on getting started. Then, check out the recommended books section:
http://www.thereeftank.com/books . There are 3 books you might want to get, depending on your experience level.
Bob Fenner's book The Conscientious Marine Aquarist is great, Aquarium Corals by Eric Borneman is wonderful, and Scott Michaels pocket Marine Fished book is excellent as well. These are must-have books. Read everything you can about reefs, reef chemistry, etc. You can use the search function on the board to find lots of threads of varying topics.
As mentioned above, if you have at least one pound of live rock per gallon and a good deep sand bed, a wet dry really isn't needed. But, you can use it as a sump/refugium if you don't have anything else

. Good luck, and ask away, We're happy to help recommend equipment, etc.
Brooke