Adam, there will likely not be tutorials like that made. Blox is a powerful tool and can save a lot of time, but is really just a more visual and for some, logical, way to put code together. But if you do not have a basic understanding of C#, as that is what the blocks are, blocks of code, you will have a hard time. Leslie has added descriptions and most are right from the Unity API doc of what the functions do for most if not all of the blocks he created, so that will help in understanding what they do along with Unity doc's. I would highly recommend you look for C# projects in unity and study.
I would strongly suggest taking a look at- https://www.udemy.com/unitycourse/learn/v4/overview
He makes outstanding courses, this one will teach you about using Unity3d and C# at the same time and at 15.00 right now, is a steal. Great for a beginner.