Hi,i'm very begginer in Unity,what i must learn for start?Graphics,scrpting,physics etc?I want to make a simple 2d game for my project at college.In past i worked little in game dev with android studio. Thanks.
Well... if you want to make a game in Unity, you must have at least basic knowledge in Unity modules (scripting, graphics...). I suggest you start here https://unity3d.com/learn/tutorials Be prepared to invest quite a lot of your time, to build a serious game.
It depends what game you want, but if you want some simple game just watch youtube tutorials, you will learn basics of everything from them, and for simple game - that's what you need.