Hi there! I highly recommend checking out the arachnoboards forum. Its chalk full of information on anything tarantula. Not sure how much research you've done so I'll just list a couple with common and scientific name.
For a first T i would suggest any of these (google for pics):
Green bottle blue - Chromatopelma cyaneopubescens
Honduran curly hair -Brachypelma albopilosum
Mexican red knee- brachypelma hamori
Arizona blonde- aphonopelma chalcodes
Theres tons out there, so see what you like, and if the care they need fits your desires.
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