Tactics, Tactics, Tactics!
I recently ordered
Chess: 5334 Problems, Combinations, and Games from Barnes & Noble.com. It can’t arrive fast enough. I played 2 games over the weekend at Yahoo Games, and lost both. They were close games lost by blunder, and getting good practice at 2, 3, and 4 move combinations (Chess Tactics, for those who don’t play) will help. Enjoy my commentary on the two games.