My newbie's thought is that black made a mistake when he/she rooked in this situation where your knight is in g5. Many do rookings just for habbit if it is possible, but it is not always - of course - usefull. Moreover I think black should move pawn h7 to threaten white knight in g5.
7. dxe6 wins a piece and therefore the game simply and easily. What can Black do? 7...Qxd1+ 8. Kxd1 Rd8+ 9. Bd2 and 7...Nxc2+?? 8. Qxc2 do nothing to get Black out of his predicament.
[Please allow 15 minutes after this post appears for me to notice and fix any typos and inaccurate wordings.]
Bb5+ is a poor move, since it loses a tempo for no good reason. I think a better move was simply 9. 0-0, which looks like a clear pawn up for white. Additionally, Ng5 didn't make a lot of sense to me.
I think the bishop sac on move 16 was completely senseless. Sure, you were already up a piece, but there was no need to give it back for no reason. Instead, 16. Qxd8 Raxd8 17. Bf3 would have gone into an ending with a piece up, and there were other simple ways of maintaining your advantage as well. Your opponent (who seemed to be completely out of it, ever since he blundered a pawn on move two 
) returned the favor by playing the worst of the three possible bishop captures, and of course you ended up coming out on top. You had nothing after 16...hxg6.
Nevertheless, this was the type of game that I like (from your perspective): you made a lot of instructive errors, and yet, due to your opponent's numerous blunders, you won anyway :)
My advice to you is the following:
a) Just because a move puts your opponent in check doesn't mean it's good (Bb5+ was highly questionable)! Beginners get obsessed with putting the opponent in check, even when it doesn't do anything else good for them.
b) Material is highly important! You had a chance to win a piece on move seven and you didn't, for reasons that aren't clear to me. Worse yet, as the game progressed, you kept trying to sac your bishop on the kingside even though no sacrifice was working. You got lucky that your opponent was having an off-day.
c) You have to calculate! "Let's see if this works" is a pretty bad mindset to have when you play a move (unless, of course, it's a one-minute game and you don't have time to do the calculations). Simple calculation should have shown you that 16. Bxg6 was unsound.
Again, making a lot of mistakes and still winning is nothing to be ashamed of, since you are able to learn from those mistakes while still getting the win and the rating points!
I hope this helps! Let me know if you have further questions.
Surprisingly, 15. Bh5 was sort of sound. But the ensuing Bxg6 was not.
Surprisingly, 15. Bh5 was sort of sound. But the ensuing Bxg6 was not.
It was a waste of time. Even if the bishop could not be captured immediately, it just sits there doing nothing.
I'm not at all implying it was a good move. But it's not a blunder, which is more than can be said about a lot of the other moves.
What was the point of Bb5+?
You know, I thought I had a valid reason to do it at the time but it was kind of a bad idea. Complete waste of time, that. He should have maybe developed his other bishop or chosen a better spot for that knight and I'd have just fallen behind in development, which tends to be a huge disadvantage because if I get slowed down even one move like that while playing black I usually just croak shortly thereafter. I guess this guy was just tired.
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I played white in this game.
Thoughts? :)