Just read/scan this forum and mile buzz for a week or so and you'll get it.

But the gist is look at the special offer sticky thread in milebuzz and make a list of the offers that match your wants and desires, read the first couple posts (especially the first post in many threads) and the last page or two of the threads that interest you. Don't hit any one bank too hard.

Rinse and repeat 30 to 60 to 90 to 180 days later depending on credit strength, ability to meet spend (or manufacture it, there is a forum for that), and risk tolerances.

Some of the blogs have primers also, but its just a longer version of that. Airlines and currencies that transfer to airline points generally have high dollar values when looking at bonuses. But we all have different needs/wants.