Buy a licence, find some water& catch some fish?
To simplafied? But im not sure what you are asking& need.

Never had a granpa, my stepdad couldnt be bothered.So as a kid in the slum , we would just walk or ride a bike down to the erie ship canal or waterfront& fish.So with very ill takle( sometimes with just a line, spark plug or bolt& a hook) or equipment & no money we still managed to fish some.,
So like that sneaker commerical says? Just do it!! lol

But serious if i can be of more help somehow let me know.