My first recommendation would be to set up a quarantine tank. It is useful for not only preventing disease, but also acclimating new fish. Use the hyposalinity method (don't use copper).
http://www.reefsanctuary.com/forums/...t-process.html
http://www.advancedaquarist.com/2007/6/fish
A first fish that I like is the Azure Damsel. It is hardy, easy to feed, colourful, and peaceful (unlike some other Damsels).
Good luck, and welcome to Canreef. Do some searching on various topics,... wealth of information available. But as always, strive for understanding, and don't just listen to popular opinion.