Had a look at some of your games on here.
You have the principles off OK as usual it's the middle game where
you (or your opponents) fail.
If time is a problem then perhaps try a systems book.
It's gives you an opening rep for White or Black usually with complete games
so you can see the middle game idea.
Of course it will not cover all the various tactics you may face - no opening book can.
This is your first game on here. Nothing silly in the opening, but as soon as
we approach the middle game you drift.
Your middle game pawn moves were bad. (14.c3??) They gave Black a won game,
he fluffed it. so you played some more bad pawn moves. (a4,c4 and hxg4)
just to give him his win again.
We were also treated to some awful defending. An opening book will not help there.
Block his lines of attack. Swap pieces. Don't invite him in. (26.Kf1)
RedSoxFan - D13 RHP 2008
[Event "Open invite"]
[Site "http://www.redhotpawn.com"]
[Date "2008.12.20"]
[Round "?"]
[White "RedSoxFan 15 33"]
[Black "D13"]
[Result "0-1"]
[WhiteElo "1461"]
[BlackElo "1359"]
[EndDate "2008.12.21"]
[WhiteRating "1461"]
[BlackRating "1359"]
[GameId "5780623"]
1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Bg4 5. h3 Bxf3 6. Qxf3 Nc6 7. Bb5 Nf6 8. O-O O-O-O {Now it appears best to chop on c6 Bxc6 because after....} 9. d3 Nd4 {.....Black has come out of the opening OK.} 10. Qd1 a6 11. Bc4 e6 12. Re1 Qc6 13. Be3 h6 14. b3 {That a bad one. A common middle game silly pawn move which blocks Bishop's retreat and leaves the c3 Knight hanging.} 14... Bb4 {This is OK as was 14...b5 winning a piece.} 15. Qd2 {Stepping into two pins. The c3 Knight and the d3-pawn. But thanks to 14.b3 White has no moves that will avoid a loss of material. Now Black has 15...e5 holding the d4 Knight and the threat of Bxc3 Qxc3 and b5 looks very good.} 15... Nd5 {Instead he blows it. Another typical middle game error blundering a piece in the complications. This looks good tilll...} 16. Bxd4 Bxc3 {...you suddenly remember that Bishops can moe backwards.} 17. Bxc3 Rhg8 18. Bxd5 exd5 19. a4 {A general strategic error that can happen at any stage of the game. White is winning so thinks any legal move will be OK. LEAVE YOUR PAWNS ALONE. 19.Re7 pile on the pressure, keep playing chess.} 19... d4 20. Bb2 g5 21. c4 {This does nothing.} 21... g4 22. hxg4 {But this gives him swindling chances. 22.h4 keeping the file blocked.} 22... Rxg4 {Now 23.Re4} 23. g3 Rdg8 {Now 24.Re4} 24. Bxd4 {Giving the piece back to stop the attack. A good idea but White let's the attack continue and defends badly.} 24... Rxd4 25. b4 {Not 25.Re4 Qxe4!} 25...Rh4 {Now 26.Re4} 26. Kf1 {This just losses. 26.Re4 as I have been suggesting for the past few moves holds.} 26... Rh1+ 27. Ke2 Re8+ 28. Kd1 Rexe1+ 29. Qxe1 Rxe1+ 30. Kxe1 Qh1+ {White resigned.}