My latest win with black pieces

Though I scraped off to win this game, I felt incredibly stupid after some moves and of course, I felt my opponent played weaker than me. I would really appreciate if anyone can point where I could have done better and help me play well with the black pieces.

8. ...Kf8 is strange, 8... 0-0 is more prudent.

10...Bxf3 is nice, taking advantage of doubled pawns.

20. ..b5 very nice!

white shouldn't have took the rook on 31

Thanks to both of you. I agree with your analysis. 8..0-0 would probably have been far better. I was thinking there might be doubled pawns that side when bishop takes knight - did not take into count that there is another knight protecting it. Felt a little dumb after that :)

I was just throwing a bait to see what turns up, but was surprised when White took the rook exchange offer on move 31 - that left me a knight up and crucially blocking White's doubled pawns!

hey bigfundu.........if u are free challenge me a 14 day game ...