Read the manual. Don't use green box auto or scene modes. Only use P, Tv, Av, and M modes, and you do need to learn how they work.
RAW>>jpeg, always shoot RAW (or RAW+jpeg) unless you are shooting a wedding...which as a beginner you shouldn't be shooting anyway.
Never shoot black and white. Always use colour RAWs and convert them to BW on a computer.
Did you need to ask this question twice?