Next step after mastering TAG style?

So ive been playing poker online pretty regularly for about a year now and ive run into a di lemma. I can beat fish and most of the low stakes pretty easily but when i move up i get destroyed. This one guy named "ih8TAGfish" made me look pretty bad once so i was wondering what strategies/ materials i need to start studying to kick my game up notch?

All kinds of possibilities.

Most fun option; hang around here, post some hands and ask questions and read other hand and situation analysis.

Other options; read books, websites, get coaching.

^^^ Ditto

Also check out icemonkey9's 1K and 2K posts stickied in the Learning poker forum, c9's "Ring Game Hand Analysis: Required Reading" list in the Ring Game Hand Analysis forum, and the Golden Archives.

Well if you are moving up and getting crushed that probably is an indicator that you haven't mastered TAG style tbh. You don't need to play LAG to win at any stakes - many good players are strong TAG players that win for solid rates.