Lloyd Chambers has generously set up a page offering a discount to any TOP readers who are interested in a one- or two-year subscription to the interactive website "Making Sharp Images." The two-year deal amounts to two years for the price of one.
As Lloyd pointed out in the comments to Ctein's "Leasing Knowledge" post, the fact that you can't "own" your own copy of the material is really no different from a movie you see in a theater, a play, or a lecture you pay to hear. I respect those who have philosophical objections to the format, but it is what it is—if you're interested in the topic and ready to learn about it, it still might be well worth your while.
If you haven't seen it yet, the Table of Contents gives a good idea of what's available. As you can see, it's going to take some commitment on your part.
Lloyd has also made discounts available for his other products as well. Here again is the page for TOP readers.