No idea how to actually play. "You can only place tiles touching your dock or your existing tiles". When you first play, there's no other tiles to touch. Trying to place a tile next to 'my' dock... shows that error message. There's only one or two places to drop a tile, and it's preventing that. :/

EDIT:.... hrm... so the tutorial always shows 'me' at the bottom'. Apparently, I'm at the top, and my 'dock' is at the top. That's a confusing way to start something. Relying on 'color' of tiles alone is just.. this was aggravating.