So I'm looking for some great books out there but I'd like to narrow my education down to about 3 or so books or courses. Below are the books I was thinking of checking out, but I was wondering if someone could recommend one that you've personally read or a course you've gone through that really impacted you and pretty much gave you the meat and potatoes of what you now implement into your sales letter, squeeze page, and email marketing strategies.
Thanks in advance.
These are the books I was considering checking out
The Ultimate Sales Letter: Attract New Customers. Boost your Sales. by Dan S. Kennedy
The Irresistible Offer: How to Sell Your Product or Service in 3 Seconds or Less by Mark Joyner
The Architecture of Persuasion: How to Write Well-Constructed Sales Letters by Michael Masterson
Does anyone recommend these? Or are is there an amazing effective online copywriting course or product anyone recommends?