Reddit reviews The Elements of Style: The Original Edition

This is pretty much the go to reference for grammar, syntax, and style. There are also a variety of writing and grammar podcasts you can look into. Overall, nothing will help you more than being an avid reader.

Actually, all of that punctuation was correct. The "and?" is a quick question and its own sentence asking to continue the story. The comma in "Don't leave us hanging, man!" is not only appropriate, but downright necessary, as segoli was directly addressing krisperaldo by calling him "man."

Here, you might want to buy a copy of this.