AA has been running a promo for 25,000 miles if you sign up for a credit card through Citi. Have you already done that? They also had a whole list of recent promos for the 25th anniversary of their mileage program. Did you participate in any of those?

You haven't really provided enough information for anyone to point you to a particular program. What routes do you fly? What's your home airport? Do you fly domestic and international? What kind of fares?

You don't need to buy a book about miles. Spend some time surfing the various forums here and you'll learn all you need to know.

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