Okay I'm very new to FUT.

I'm just looking for some tips on how to start out. I don't want to screw anything up.
I mean I've been playing for a few days now but I just want to know, who are some key players I should keep an eye out for, mainly bronze/silver players (playing as a 3 star team at the moment until i get the hang of things then I'll start going up higher)

Since I don't mind sparing $5, is it worth buying a silver team pack? so it gives me 11 players and a manager?