Twitch Linking

How do I link my Twitch account?
How do I unlink my accounts?
What rewards do I get for linking?
How do I know what Twitch streams are eligible to give rewards?
How do I earn or unlock rewards?
What rewards are available for Drops?
How and when do I get my rewards?
Help! I haven't received any rewards yet.
How long do I have to watch in order to obtain a reward?
As a streamer, how do I make sure my viewers can earn Drops from my stream?
Do I have to watch a single stream without breaks to earn a Drop?
Will there be more rewards/campaigns added in the future?