Do I have to buy ticket or stuff to go and watch?


It depends on the contest - for Worlds in the US, yes. Most US regionals, no.


How much is it? And when?


Google “worlds yoyo contest” and “National yoyo contest”


To attend, most contests are free. I know Worlds charges and the charges will be on their site about 6 weeks or more before the event.

I know CalStates, BAC and Nationals are free.

Just about all contests have entry fees to compete.