Banners – banners don’t work well. They’re easy to throw up, but distracting and probably won’t get great results. If you try them, be sure to show specific sidebar banners based on the type of content people are reading on your blog (for posts that fall under my SEO category I would show a banner related to SEO, and for posts under my website speed category I would show a different banner). You can control sidebar banners using a plugin like Widget Logic.
They provide access to over 100 video tutorials with PDF lesson notes which cover almost all the aspects of Affiliate Marketing. If you don’t want to purchase any professional course listed above (which I would recommend, if you can afford, as there is value, accountability, some inside information, personal support, peer network and success stories to learn from) then Affilorama is a decent option to learn the basics of Affiliate Marketing.