I have experience proofreading thesis papers for history majors for the past year. I have also contributed to Project Gutenberg and continue to do so. My go-to style guide is CMOS. I read an extensive amount of fiction, and am always on the lookout for the newest grammar and linguistic info. (The evolution of language is fascinating!)
Sometimes my cat Jam will contribute his opinion to my projects. He's also passionate about grammar. Or maybe just stepping on keyboards.