Buy cheap colour film from a local store to practice on. This is your first go with film, no need to buy anything expensive or exotic. Get it developed and check to see the camera is working and that you know how to work it!
Later, when you're confident, choose one film and stick with it. Learn to develop yourself and have fun!
Start with good quality film. Fuji or Kodak Color print film.
Cheap film may give poor results and mislead you into thinking you are off base.