I did a lot of research to find the right one, and so I chose Making Sense of Affiliate Marketing by Michelle Schroeder-Gardner (as I mentioned earlier). I figured it made sense to learn from the best, and with a 30 day satisfaction guarantee, I had nothing to lose. I chat WAY more in-depth about it in my review here, but this course was definitely a gamechanger for me.
Not necessarily, but a blog is really the best promotional tool. With that said, you can always use methods such as PPC or advertising to promote a product. This is another popular method to grow in affiliate marketing. For me, the best way to make the most out of affiliate marketing opportunities is to have a blog. Learn how to start a blog here.