The document outlines 7 common errors in English grammar:
1. Misuse of apostrophes in contractions and possessions.
2. Confusing your/you're, its/it's, there/their/they're, to/too/two, then/than, and me/myself/I.
3. Examples are provided to illustrate the correct and incorrect usage of each grammar point, with links to additional online resources for more details on avoiding these common mistakes.