Not, to get started its really better to use a tutorial to get used to unitys structures. When you are unsure why something in a tutorial is done its best to take a look at the unity script reference and maybe write down the explanation as comment so that you understand the complete script in the end.
The Walker Boys tutorials from a mouseclick- to a 3d platform-game are really good. They might be a bit slow if you already know how to program but you cna always skip forward.
I would rather use c#, its a real programming language and its syntax is pretty close to java. The code from the tutorials can be “translated” into c# pretty easily.
If you already know the programming basics in only language you can just start off with the tutorials. When you are comfortable with unitys structures and feel like it you can continue the tutorials but write the code in c# instead of javascript/unityscript. Thats pretty easy because 99% of the unity functions are the same.