Twitch would be the friendly starter platform, depending on the game you are streaming, viewers would click on the game title and able to browse thru streamers, Also streamers can host other streamers to get more exposure, so make lots of friends in game and on twitch, whereas Youtube, it gets a little bit more complicated.
Use both platforms and see which one picks up more viewers for you, no harm in trying both.
What games do you stream?, PM me your twitch name, I'll be a follower and viewer
