Much depends if you are going to be letting it ride each month or paying it off. Either way you should get one that has perks like gold points or frequent flier miles. If you spend enough, the frequent flier miles can perhaps pay for a couple industry trips to conventions.
The only other advice I would say starting out is the same as when you first get a card in college. Just be smart with it and don't overspend on it. This is nice too however to keep track of your right offs at the end of the year.
Also if you really have time to burn, sign up for an affiliate program, and then collect a nice CPA......financial CPA's rival the top poker CPA's
Just keep in mind, the end goal is to qualify for an American Express Black.
