Hi Djaydino,
I am quite sure this is all second nature for you. I should add this is C# basics and Unity, not Playmaker related directly. It's good for people who are not entirely newbies with Playmaker, yet code newbies. Because when you use Playmaker for a while and slightly more seriously, you eventually want to know how to access scripts, and object properties, and things like that, hence it's good for beginners of Custom Scripting (I think).