Studio Arcanis

I started reading a book by someone named Virgil about magic and he is talking about how helpful learning from the Franz Bardon Magic system has been for his development. Of course, I have heard of Bardon and already bought his Initiation book (but haven't read it yet). But it got me wondering if some of you who might be more familiar with Bardon and actually doing the exercises, steps, etc., might have some recommendations or other comments on the Bardon system and how helpful it might be for growth and improvement.