What is the tone of the help?

Tone and mood are pretty easy to mix up. Here are the definitions from an AP English student:

Tone: how the author feels towards his subject.

eg. Mark Twain's Huckleberry Finn is satirical since Twain's making fun of Huck's ignorance as well as the racist, uneducated Southern people. The tone in Supersize Me is also satirical: Morgan Spurlock is making fun of American culture.

Mood: how the reader feels when reading the book, essay, etc.
eg. the moods in Heart of Darkness and The Sixth Sense are depressing, dark
the mood in Freaky Friday is light and humorous
the mood in Pride and Prejudice is serious