Grammarly
Grammarly Blog: Comma Between Direct Quote and Attributive Tag
This page explains the comma placement needed between a direct quote and its speaker dependent upon the location of the attributive tag. It includes examples of various tag locations.
Grammarly
Grammarly Blog: Comma Before Too
This page explains the use of commas to emphasize the word "too" in a sentence; the use of one, two, or no commas depend of the use of "too" and its placement in the sentence.
Sophia Learning
Sophia: Commas in a Series
This slideshow focuses on the use of commas in a series. It discusses the rule for commas in a series; requirements of a series; words, phrases, and clauses in a series; and comma placement.
Capital Community College Foundation
Guide to Grammar and Writing: Quiz on Comma Usage
In this comma quiz, students read each of two paragraphs and insert necessary commas. When finished with both paragraphs, they click "Explanations" to see the correct comma placements. Java is required. Links are also provided to "Guide...
Get It Write
Get It Write: Punctuating With Parentheses
Here's a great tutorial that explains when to put commas inside or outside the parentheses. A brief quiz checks your understanding.