this is a game where ive tryed to highlight the key points where I have blundered. Any comments would be much appreciated.

 5. Qf3 is a possibility. It threatens mate. Blacks best response would probably just pull back by 5. ... Nf6.

 

6. Ng4 would still cost you the knight. 6. d4 looks better. If 6. ... Qxg2 then 7. Qf3 protects the rook.  d4 protects your knight, adds control to the center, and frees your dark square bishop.

  

On move 9 it probably wasn't the best idea to trade when you're already down. 9. cxd5 to weaken the protection on the knight followed by 10. Bc2 to pin the knight to the queen. White will want to get out of the pin but protect the knight by moving the queen to e6. Then chase the bishop away with a3 and b4 so you can pin the knight to the queen with e1.

 

Also on move 9, it was probably better if you moved the knight first and attempt to keep both bishops instead. 

 

Black could've taken a free rook with 22. ... Be5. 

Oops, slight mistake on my analysis. 9. cxd5 0-0 10. Bc2 Qxd5 so no rook pin.

 

9. Bc2 is probably better since it goes straight for the pin and also threatens to trap the black bishop with a3-b4-c5. 

thx for the help sunshiny

The opening you chose was simply picked apart by a superior opponent.  If you look at the opening after the 4th move, you can see that black has the advantage in development.  I mean, his ability to mobilize his forces was faster than yours.  You lost a move by moving your bishop twice in the opening and black capitalized on that error.  6.Ng4 leads to...Nxf2, 7 Kxf2 Bxg4 and white has serious problems because he has an exposed king and cannot develop his pieces fast enough to defend.

Be careful with your opening selection and always ask what is your opponent's plan.

One rule came to mind in the first few moves - Knights before Bishops.  What were you hoping, to kill that guy with fool's mate? ;)