ELA creative writing outlaw The Seven Deadly Sins of Punctuation And How You Can Avoid Them (Note: Read carefully. They preface each "faux pas," telling you the correct usage, but provide the WRONG way as examples. It's confusing).
This chart provides a clear reference for teaching adverbs of frequency in English. The percentages are a great way to help students visualize what each word means and how to use it. I could have students fill in a pie chart for each word as an activity.