Anything that says "for a limited time only" makes me a little leary, but right now this site apparently has the entire content (legally, they state) of Larry Eisinger’s "How to Build 20 Boats" published in the 60’s.
Take a look at some neat writeups and instructions. I find that we can sometimes learn a lot from these older texts, although you have to take into account modern changes in materials. Fastening technology (both chemical and mechanical) has changed, along with the availability of lumber/wood. Plywood of today isn’t always the grades that it was 40 years ago. Take these things into account and you can learn how boats have been built for many years. Many aspects haven’t changed at all (lofting, etc.).