I would rate this 9/10 (it is not perfect) but it is worth 5 stars.
Yes, it is true Polloquin prob. upsets a few people, he makes comments such as "pencil necked geeks", please don't take anything he says like that personally, it is just his off sense of humour, he is not malicious and if you heard him in person you'd realise he is kidding around. And yes there are spelling mistakes and things, but don't worry about that.
The information is first class. I highly recommend this to a beginner because it will give you a good grounding on truth in bodybuilding, and techniques that work. Honestly, if you are a beginner, pretty much anything you do will get great results (and hopefully not injury - get a book on weight training technique if you don't get this one), so don't get all wrapped up in any specific system just because it gives you good results when you start out. The information in this book is as good as any you'll find and covers all topics (except you should also get a really good nutrition book).
Polloquin Principles is a bit basic - now it has a lot more information than many other books, but Polloquin has a lot more tricks and techniques than just what is in this book, it is a shame he does not do a part II with all his many many tricks. For example, if you exercise a bodypart in the morning, then again 6 hours later, you will have a major neurological advantage because in those 6 hours your nervous system overcompensates, giving you major strength opportunity later in the day for the same muscle group. He has many obscure tricks like this and I wish he would write them all down!
However this book is more like a good, solid, overall book. The beginning covers basics, then workouts, things like reps and volume and stuff. Then, it goes through every major muscle group (legs, back, arms etc..) and tells you the most productive, most important exercises to do, how to do them.
It is a good foundation book, essential for beginners and intermediate, and even advanced (although by now you have prob. encountered just about everything already).
Note it is not only for bodybuilding but if your aim is to gain strength, or sport conditioning as well.
And I highly recommend it for women as well. Don't think all this is just for men, women and girls have got a lot more to get out of weightlifting than men do if you ask me.