MMOs are complicated beasts. In most games you have at least a detailed set of game mechanics and combat systems to learn. That's not even getting into things like Fallen Earth with its maddeningly expansive crafting, or EVE Online and the detailed economy, or Champions Online and a costume creator that some find more engaging than the actual gameplay. There's a reason why most popular games spawn countless websites, forums, chat channels, and so forth -- because there's a great deal to learn, a large number of mysteries, and often a limit to how much useful information the game itself gives you.
So how do you learn your game? Do you browse forums and ask questions, building up advice from a community? Do you read the numerous sites devoted to the games, such as databases and wikis? Do you buy print strategy guides and try and adapt to the changes as they come, piece-by-piece? Or do you eschew all of the above, preferring to just let yourself amble along and learn things by example and inference? There are a lot of resources out there, and we all have our preferred ones, but today we want to know about yours.