This link guides to an article by Creative Bloq an amazing design blog.
Hope his would help people who can’t afford graphic design books to some degree.
LOL, I clicked on 2 of them
One wanted all my contact information because they were a printer offering an eBook to get new client contacts (one of my outsources does that too.)
The second wanted me to sign up for a “free trial” of their eBook service that is $30 per month after the trial ends.
Everything free is more trouble than it’s worth if the internet marketing grues are involved. (not gurus. Grues.)