Thinking About Punctuation

I read this section and became totally overwhelmed! I think I'm the opposite of the majority in that I'm fine using semicolons and dashes and actually like to use them when their effects are appropriate. But I use way too many commas, and don't really know when to use or not to use them, most likely because I never knew the real rules. I also always wondered about hyphenating things, so now I know! I think this section is one I really wish I would have had around sooner because although there's a lot of information packed into about four pages, it seems to explain things well.