You can watch European darts that are played over the weekend on Youtube about 2-3 hours they have ended. Aside from watching actual games, there are two interesting and helpful people you can subscribe to on YT.

Japanese Guy TV: https://www.youtube.com/user/08uj0045

I am guessing this guy works at for an airline as he travels to the UK and the Netherlands very often, two countries with great darts players.

Darts Review Channel: https://www.youtube.com/user/dartsnutzdotcom

I dare say he is the person to turn to if you want to buy darts. He has uploaded tons of reviews and they give you a good view on the darts that you may buy.