Now, I'm no expert, I consider myself a beginner, and my bro's a beginner who knows all the basics but nothing special.  So, basically, I posted this to get advice on what moves I could've done or something, like 'it would have been better to do [??] than [??].  Positive criticism will be appreciated.

U should better castle to kingside i think.

i dont think black should ever play like that, if white brings up b2 to b3 then he or she will be able to make a 2 move checkmate, but the knight was brought up on black so thats ok.

Move 13 h5 was a mistake.. you could have moved ur bishop to h3 and you would have evenly exchanged bishops as it was protceted by the queen

I've never seen this variation before. But 6. e5 might be not so good, it weakens the d6 pawn which can't be pushed forward. Your bishop and Queen will probably move out sooner or later as you and your opponent steadily develop pieces. Another reason not to play e5 is that there is no need to cover the f4 square and that you already control the d4 square. Better would be g6 so you can fiancheto your bishop.

13. H5 is a bad move. Just move your bishop to h5. It would probably have been better to have left the diagonal for your bishop open and not placing a queen there which blocks it. 

 It seems to me that you need to pay more attention to your pawn structure. Your neglecting it in this game. This is important, especially in the sicilian defence. C5 weakens your queenside enough already.

You're not being too critical, all of it is helping me.  Also, yeah, I need to work on being able to see 'combo' moves, I guess you could call them that.  As for the Queen and King on the same diagonal, I understand, and usually I don't do that, I personally feel that I messed up quickly, jamming up my pieces.  Thanks to everyone for the responses.  Soon, I'm planning to buy a Month of Chess Mentor and just do as many lessons that I can within that time.

instead of 11...Nxe2, 11...Nf3+ 12.Bxf3 Bxf3 is better.

The reason is that with white's pawn formation all on dark squares around his king, white's light squared bishop is a very important defender of those weak squares around the king.

Once that bishop is removed from the board, white's light squares will be very weak in the vicinity of his king. If, as in the given variation, black is able to exchange of that light square bishop from the board while keeping his own light squared bishop, then it will also be much easier for him to attack those weak squares. 

Now mating threats appear naturally whenever the queen joins the bishop, also, blasting open with h5-h4 creates direct mating threats. Hard to do with that white bishop there...

 Now, that was a general reason, but in here it is even more serious, as black has immediate threats after 11...Nf3+ 12.Bxf3 Bxf3, the e2 knight is pinned, and black threatens Qh3. ouch :)