Whenever I'm not sure which rabbit to chase, I dive into a book. But I've been reading the same over and over again for too long. The Boron Letters, Bencivenga Bullets, Eugene Schwharts Brilliance breakthrough, and The Psychology of selling.
These are outstanding works of literature, and I could still do to read them through again, but right now my brain needs something else to chew on.
I don't care whether it's a book, a course, or an email list. I'm looking for something that's not super easy to find, or that pops up when searching "best books on copy-writing." And it doesn't have to be copy-writing, it could be anything on entrepreneurship or marketing. As long as it's highly informative, and highly relevant to online marketing today.