Not books, but these tutorials might help you get started. You might also want to check out Unity Develop which is a Unity/Javascript IDE made by the awesome guys at Blurst (code completion ftw). Here's a thread about it if you have troubles... and the actual thread which may have more info. I'm planning to take the C# or…
Im currently messing with Unity with the intention of building a little game. Now thay may be a way off yet as im very much a beginner with programming. I learned the real basics of C but never anything game specific and nothing object oriented. Ive picked up a couple of really great books on Unity, which, along with the…