You would be looking for a set of cavity back
irons. Depending on what you want to spend, there are plenty of good sets out there. If money is no object, go to your local golf store and try out as many different sets of
irons you can. Once you decide on what you want, get them to fit you into a brand new set.
If money is tight, try looking on eBay for a set of used
clubs. There are plenty of good brand name
clubs that are used that will help you. Look for
Ping Eye 2's and the
Callaway X14's.
As for your swing, my best advice, as to all beginners, go get yourself a few lessons from a professional teacher. The lessons will prove themselves invaluable as compared to struggling along trying to learn on your own.