This page contains resources on punctuation. (Note: The page will be updated as more resources on punctuation are added to the site.)
Multiple punctuation
Even expert writing can err on punctuation. Here are some I found:
Semicolon
See several examples of semicolon, categorized under its two uses: joining sentences and acting as super-comma:
Colon
See several examples of colon, categorized under its three uses: explaining a statement, introducing a list, and introducing a quotation or excerpt: