Not sure where to start... Riichi Mahjong game

Hi everyone, I imagine this question get posted all the time so forgive my ignorance please.

I really don't know much of anything about Unity, C#, or Java, but I see all these really fun indie games coming out lately and I hear that a lot of them are being made on Unity. So I guess that's why I'm here.

For my first project I'm wanting to make a riichi mahjong game. I understand that Unity is way more powerful of a platform than a game of that caliber would require, but I hope to get experience with the program to be more prepared for any projects I might move on to past that. I have been reading and watching tutorials on 2D game making in Unity but everything I've found involves a character moving around or recreating pong. A mahjong game wouldn't require any of that, it's just clicking tiles and having things happen based on what was clicked.

So I guess my question is something like: Are there any good "Making your User Interface" tutorials?

I'm so new at this I can't even get my tiles to appear in the scene.

Like I said at the top, I apologize for such a noob question and I'll keep Google-ing in the mean time.

Thanks for any help.