If you're looking to play woodsball, there isn't much in the way of local tournaments so there's no real training or many teams as far as I am aware. Your best bet is to go out to your local site and play as much as you can, and speak to other players for tips! There's a walkon day (games just for people with their own kit) this Sunday at the Mayhem South East site in Sidcup/Ruxley Corner, which should give you a good place to start. The details are in the facebook group "MSE walk on community". Everyone there is friendly and helpful to new players.