Although I've always been a "geek" I am into sports since high school - so it is now more than 20 years. Maybe I was just lucky, but I always had good results, even in the era when internet was not there for the information. Never had to take any supplements, and the results were just right. I won't bother you giving advice, because:
1. Everyone's body is different 2. It's simple once you get it, but it might be difficult to explain.
I'll just say that skimming through this guide I've seen a lot of fluff, some good info and also lots of crap.
I think that, for the people here who would like to start working out, the most important things are:
1. You have to build the habit of working out from now on for the rest of your life if you want the results to stay. 2. Find a professional guidance at first. An enterpreneur whose experience sums to (citing from the OP): "I wrote the first draft of this guide months ago. I meant to publish this then. But I unexpectedly lost half the muscle I had gained." is not the best source of knowledge in this area.