NEW AND POLISHED VERSION

This book is not made to insult anybody, and if I give examples, I will not say the author's username. If you are offended by any of this - instead of ranting about it in the comments, just be a good person and stop reading.
Remember - this book is supposed to be a helpful guide for anybody that's just getting started in writing books. But if you're just reading this for entertainment, then please be respectful.
Also, feel free to put your own ideas of 'beginner mistakes' in the comments!