A total newb here need help!

I hope the question wont bring flames on me..haha. Btw, like the question above, I am completely new to unity and currently studying on games development(C++). So I would like to start off with a simple 2D game such as this > Lost Dungeon which is my very first game made with "Stencyl". It was easy as the engine was mostly drag and drop. So, I have downloaded Unity, installed, and I don't know where do I begin next to achieve a game like that. Created my sprites and stuff ready and I guess it wont be so easy after all with those tile maps and stuff. I'm ready to start learning :)