While I’m not exactly a frequent flyer, I do travel quite a bit and I do enjoy doing it for free as often as possible – using miles and points. But it’s a complicated game and it’s not for everyone. But if you are interested in learning a bit more a good place to start is with The Points Guy’s Beginners Guide.
I think this guide is a great start if you’re interested in getting into the game, as it covers a lot of basic information and shows you where the miles are.
I also wrote a post back in 2009 about some Frequent Flyer Misconceptions, you can also find a lot of helpful information there if you’re a beginner.