Another source of free resources regarding IM is giveaways. While many people do submit sub-par products, others submit very useful ebooks, software, and memberships that can help you learn things such as website building, list-building, affiliate marketing, and much much more.
An example of a giveaway would be
http://www.the-thanksgiving-giveaway.com.
Once you join one, the owner usually notifies you when new giveaways are opening so that you can head over to see if there's anything useful that you want.
Word of warning, you should not go and learn everything you find at once. You should focus on a certain aspect and get a firm understanding of it and even implement it before moving on. As in, don't try to learn affiliate marketing, PPC, SEO, web design, and copywriting all at once.
Hope that helps.
Curtis