If you’re a native speaker of English, most of the information in the Parts of Speech chapter comes pretty naturally for you, but all of us have trouble with some aspects of grammar and usage from time to time.
As you edit, you should not worry about every single part of speech or what its function is. Instead, you should consider any struggles you have in your writing, review those guidelines, and keep that in mind as you edit. For example, if you have trouble with pronoun agreement, you should review the section on pronouns before you edit, so the guidelines for correctness will be fresh in your mind.
It’s your turn now, and knowing more about correctness can help you as you edit your work and get it ready to submit to your professor.