Once you read through that and perhaps use the subthreads and subsubthreads, you can formulate a question properly and ask about the part you don't understand. We're not going to read the book on it to you A through Z.
Google search words like "shroom shotgun tek", is another good idea. Or otherwise "beginner shroom grow tek" if you want to be less specific. You will find recipes all over the place so check it out.
This is a community, not a free service instructions deposit.