Where did it all go wrong?

Please help me by analysing this game. I lost! thanks guys

ps see below!!!!

   game with FULL annotations 

I don't agree with

5....Bxc3. That's two tempo for a piece that moved only once. Besides, your king's bishop is a good attacking piece and the knight wasn't doing any damage thus far.

 12...c6. The pawn move is unnecessary and blocks the scope of your fianchettoed bishop. You should have activated your other A rook to e8 or something with the thought of pushing e4. So when he does a6, you can pull your bishop back to a8 and maintain it's strong influence over the board. 

14...c5. Another unnecessary pawn move in my opinion. You should have spent the tempo directing your pieces toward his kingside. That way you wouldn't have had to take his knight with your bishop on move 15. Your bishop was way more powerful than his knight, and would have been an important factor in penetrating his pawns. 

 18...Nf6, while not terrible, seems too slow. You already have your Queen, rooks, and other knight ready to attack his king. The other knight just seemed to get in the way.  f4 would have been a much stronger contiuation of your previous move.

 21...Ng4 seems kinda pointless and a waste in tempo, seeing as he forces your knight back to where it was with h3.

26...exd4 is absolutely pointless. You have strong potential for a kingside attack, but you allowed him to completely distract you in the center. hxg4+ is the correct follow up to all the tempo you spent getting your rook back to h8. 

 29. I woulda done dxe3. Then when he does fxe3 do f4! Where is e pawn is pinned to the queen, (exf4, QxQ, RxQ, QxR where black is now up a rook) so, your f pawn can tear apart the wall of pawns protecting his king. 

31... cxd4? You should have done Ng4+! With the revealed attack on the Queen (h pawn is pinned by the rook) and you win the rook as mentioned in my previos comment.

 Pushing your pawns after move 50 was pointless. You should have been rushing your king to the kingside to stop the advance of his two pawns, since his bishop couldn't take your pawns on the dark colored squares.  

Overall, the main thing you need to work on is making sure your moves have a purpose behind them.  

Taking the knight would be bad on move 3. It's still a waste of tempo, and the pawn that would be on c3 would now support the advance of the d pawn to challenge your center. Plus, it opens a nice file for his rook.

 I agree with 8....Nd7. Moving the bishop again, woulda blocked the development of the knight to c6. Better to develop the knight than move the bishop again.

 And you're right on move 31. I forgot the pin of the pawn to the king. Although, it really shouldn't have reached this position anyways =p

I want to know why you opened with 1. ... e5 and followed 2. Nc3 with Bb4.  Flawed opening understanding leads to poor middlegame positions.  I find it hard to comment on the game overall because it began largely with a weak reply to 1. c4 and then saw very strange moves.  My best advice would be to go to something like chessgames.com and just try to learn the first 3 or 4 move replies to 1. e4, d4, c4, and nf3.  Once you understand why Bb4 is weak there, I think your opening play will give you more of an opportunity to control the middle game.

Also, moves with the reasoning "because I couldn't think of anything else" shows a lack of chess knowledge.  Every move should be about controlling important squares, creating opportunities for favorable exchanges, and trying to successfully promote pawns (in the end clearly).  Look up some games by the greats and see what they do.  Then try another game and annotate it as you go and post that up here.  Every move you make should be with intent of increasing pressure on key squares early on or creating favorable imbalances (bishop vs knight, pawn majorities, etc).

 yeah i'm not very good at openings. i either seem to cramped or i push my pawns to far. when i said "because I couldn't think of anything else"

i had a plan, it was just i thought that there must be a better plan out there, its just i couldn't see a better move. i will post a game again next time i have a better opening. thanks for the infor, keep it coming! 

4...d6 is BAD 5.queen d1-a5+ ;)(5...Nc6,6.QXc6 Bd7 7.Q somewhere...)

10...Ng6 is a big pointless...

11...Qe7 :)) what about your bishop on b7???,12NXe5 it a good attack winning a pawn, 12...Bb7Xg2,13.NXg6(wants the queen:)) h or f X g6 and 14.KXg2 white wins a material,but nm...

that's for first 11 moves ,u had a big attack after his d4 :(

but not correct moves ...

 39...Re8,hmm 40.RXe8 what's the problem?? ;)

not so bad ...more careful ;))

 Yes resign if you're doing poorly, if you're at a lose, and your opponent obviously knows what they're doing, it's polite and saves you both time wasted dancing around for 50 moves.

I haven't analyzed this indepth, but something to consider:

after move 50~ could you have not taken your king and eliminated the opponent's pawns?  With king and bishop alone, white would not be able to check, forcing a draw.  Just a thought.