most are sold out any kinks to ebooks sold?

You can buy the full series. Or check the likes of amazon. The books were first written in 1980, so they are fairly widespread. You can find plenty of youtube videos of people trying to make them, and once in a while forums dedicated to people making them (and suggested upgrades). They are not the best machine cools you can get/make, but they are serious tools and better than most DIY attempts (though the video here is better than most DIY attempts I've seen)