Think and Grow Rich for the mindset/planning
Cashvertising for the copy/psychology
Landing Page Optimization for the testing/analytics
If you want a course on paid traffic, I think Gauher Chaudry's are top notch - PPC Formula and PPV Formula. For media buys, Traffic Tactics, For SEO, Seobook and Stompernet are decent, but a lot of the best SEO stuff is free and online, easily found via searching google for blogs and guides, and there aren't really super top secret SEO algorithms, there are basic principles and guidelines and techniques and tools.
As far as the mindset goes, not the technical aspects of things, want to know what a lot of business books will say, as well as people on this forum? Make a solid, well researched plan, and then take action. Do not create a plan and then 1 month later create a new plan without fully executing the first one, and then a month after your second one, make a third. If you read 500 business success books, the key points of each one will likely be along the lines of 'have a burning desire, take action, do not quit when you fail, stay focused with unshakeable followthrough, think big, always test, never get lazy, always scale'... pretty much as simple as that. But cashvertising and landing page optimization really cover a lot of bases, and this is coming from someone who has a 20gb ebook library of this genre. Get basic mindset down, get OBSESSED with making money and make it a top priority in your life, basic copywriting tenets, some technical abilities, familiarize yourself with scaling/optimization, the tools of the trade, the various techniques, and then just start doing things. Everyone will say that, just start taking action. CPA is so ridiculously easy to get started in you don't really need to read much (although at stages in the process it'll help), unlike, options trading, or something. Reading for pleasure and personal enrichment is one thing, but reading hundreds of business books before you're making at least 50k a year entirely online (which honestly isn't that unreasonable a figure for a highly motivated person who can put in large amounts of work hours) is probably diverting your focus. And don't get me wrong, books and courses are great, but I've seen many people in this industry who get too into books and not enough into working.