Tested Advertising Methods by John Caples was the first book I ever read about advertising. I re-read it about every six months.
It is an absolute must for anyone who wants to understand the fundamentals of advertising, from A/B testing to writing good copy.
Decades after it was written, this book is still relevant, still insightful, and still a must-read.
You can buy it on Amazon: Tested Advertising Methods.
Oh, and if you buy it from here, you’ll help me support Conversation Marketing, which is becoming a bit of a job in itself…