http://www.cultofcopy.com

You'll be taken to a Facebook group.

12000+ members.

Very active. Loads of expertise.

Pinned offer at the top by the founder.

I've been studying & writing copy for 20 years. Started with Dan Kennedy before he got really famous (good partnership with Bill Glazer, that one), Caples, Ogilvy. Learn the fundamentals.

Are you doing B2B, B2C or IM sales? Each requires a different voice; for example, use the ultra-hypey IM voice for B2B and they'll run away so fast it'll make your head spin.