I would start with a credit forum to make sure you know your finances, your personal credit history, the impact this game has on your credit score, and whether you can play. Then, pull your credit reports, check for inaccuracies, scores, etc. Once you have determined that you can/ should play, then determine which programs are best for you given your goals. You can then determine what Credit cards can get you to your goals. You do this by reading the threads on the CCs/ FFPs you a considering. If you have questions, search is key as most of the basics have been answered numerous times like the life of a hard pull, Impact on credit score, what if I need a mortgage or other loan, how many cards can I get, how to put together an AOA, etc., etc. You will have more assistance when you a) appear to have read something and b) have your goals firmly in mind and put some effort into figuring out how you can achieve them.

It's harsh to find out that you will need to do more than post a question and apply for a credit card or two, but the reality is that failing to understand things up front results in less than optimal results like having miles in numerous programs, but not enough to redeem any for a flight, etc. and a whole host of other mistakes. It's very time consuming, but rewarding.

Good Luck!