For posting: - invitations to games (you can also use the New Game menu or go straight to the Chess Invitation) - information about upcoming tournaments - discussion of games (please limit this to completed games or discussion on how a game has arrived at a certain position ... speculation on who has an advantage or the benefits of potential moves is not permitted) - links to interesting related sites (non-promotional)
Algebraic chess books can be followed in any language if they use a symbol for the piece. P-Q4 doesn't tell you much if your language uses different letters for pawn and queen. The narrative can be a bit tricky of course!