The specifics may depend on which House you're in, but officially, you need approval of the Quidditch captain(s) and your Head of House. You'll also probably have to meet some other requirements in the form of practicing (botting) and trying out, which is also a test of your botting skills.
Your best bet is to ask your Prefect or your Quidditch captain. There's always people willing to help!
To play Quidditch you have to ride on brooms.
Yes, all four of the houses at Hogwarts (Gryffindor, Slytherin, Hufflepuff and Ravenclaw) play Quidditch.
No. Harry plays Quidditch during a cutscene, but you can't control him.
She was the flying instructor for first years and the quidditch referee.
Seeker
no one place. she doesn't plays quidditch.
Harry Potter plays a game called Quidditch. He is the seeker.
There is no character by the name Mr Norris in the Harry Potter series. The closest is Mrs Norris, who is a cat and does not play Quidditch.
You must be really stupid, because Mrs Norris is a cat, and cat's can't fly on a broomstick, and there for can't play Quidditch.
Beaters.
Hol's population is 4,556.
Because he needed a good broom for Quidditch