When I first started, I got this one:
http://www.cutedigi.com/product_info.php?products_id=4260&osCsid=9e694682f69c910154563248e14456fc
It's been treating me pretty well 
I do suggest that you also buy some resistors of common values (330R, 1kR, 10kR, etc.) and maybe something fun like LED matrices.