Looking for help

Hey guyss, im not so new to the game, like i have a BRIEF understanding of the maps and strats. I was wondering if someone would help me out, show me spots to play on the maps, how to play them. nade spots. i have an m4, ak, awm, deag. if it means anything lol. i come from a long line of competitive background. so i do have some sort of game sense. anyways.

ingame is Zerazmic
xfire is xxcobblerx

thanks.