CS-Nation

Covering the future of Counter-Strike
how do i learn to play well on all of these maps?
Learning the maps may sometimes seem impossible, but the best advice that we can dispense is to play all of them, and play them often. The more you play a map the more you get a feel for its nooks, crannys, mazes, and choke points.

If you don't want to stop at merely knowing the map, and would like to plan out complex strategies, Counter-Strike 2D is probably the best resource for your strategy needs. CS 2D has “detailed floor plans, or overheads, of the most popular Counter-Strike maps.”