Rossmann Macbook repair notes!

Hi there;

I ve heard and even seen some screen shots of some macbook repair notes (a kind of repair guide of most known problems) of Louis Rossmann on social media, I am a member of this group for almost a year and I didn t heard of its existance.

My question is: is there any book or guidance notes that Louis Rossmann sells? If yes how can I get it and for how much?

Kind regards