It depends what you think you'd like and what is available in the area you live in. The most popular (and as a result probably the cheapest) are soccer/ football and swimming. However there are a ton of sports out there that are fun such as hockey, rugby, american football, baseball, tennis and volleyball. You should try a few sports out before joining a team to see if you like them. Also, it is helpful to evaluate yourself and decide if you think you'd like a team sport or an individual sport! Good luck!
Football
The best is football, it is easy simple and fun! Swimming isn't that fun because you can drown, but if you like water go ahead! Football is also pretty cheap.
Fencing. Its fun and keeps you fit. There is an air of romance acociated with the sport.
Ice hockey?? Field hockey?
either football or soccer
I want to play a sport besides basketball. I already tried that and im terrible!! Please i need ideas!! Something fun and popular!