Help about my hair, help please : )?

ill start by sayin my hair is poofy, really wavy almost curly, medium length and not coarse. Im prone to getting lots of frizz and poof by only 3 or 4 hours into the day. so i just want to know this, how many times should i wash my hair a week? and when its dry and you dont wash your hair that day,what do i do to it? like wouldnt i have to wash it from the gel i put in it? help? any tips ?