I am a 30+ year developer that decided to finally try game development. I'm currently working through the tutorials and find they are full of good information on unity and its tools. I can recommend GTGD S1 for anyone that already has a good understanding of programing and just looking to pick up unity development.
The author is obviously self-taught and talented but, that said, there are glaring mistakes in code that could be confusing to a novice programmer. His copy and pasting of code instead of creating a function, his misunderstanding of how some construct work and a general lack of OOP can be a bit of a distraction or teach bad habits to a novice developer.
I suggest anyone new to software development to find tutorials on C# that focus on “Object Oriented” programming first. Once you have an understanding of the basics these tutorials become more of a “What Can Unity Do” tutorial then a programming tutorial.
Even with the issues with the coding, I will recommend this as a good way to learn the basics of unity. The fact that this is based on Unity v3.4 is not that big a deal. The information should migrate to the next version with only a minimal effort; migrating code normal in software development and just another lesson.