I wasn't that into it when I started watching people on Twitch, but I found that the merger of gaming, entertainment and social interaction was a pretty good thing. You've got a wide variety of streamers to pick from, the alpha tryhards, the emo ragers, the chilled out casuals, the cancer chat troll streamers, the regular everyday types, all sorts of things. Now that Twitch added the Creative and Talk Show channels you've got people doing paintings and other artwork, making their cosplays, getting their friends together for roundtable like talks about this and that, all sorts of things. Just explore it based on what games you enjoy or want to find out stuff about and go from there.