I started here http://worrydream.com/AlligatorEggs/ http://worrydream.com/AlligatorEggs/. Great intro article and my favorite visual explanation. The alligator

I started here http://worrydream.com/AlligatorEggs/ http://worrydream.com/AlligatorEggs/. Great intro article and my favorite visual explanation. The alligator system helped me visualize the dynamics of the system. However, about 3/4 of the way down, the pictures start being harder to follow than the bottom section of the page where he notates Church numerals and the Y-Combinator (without even defining what they are, which I find hilarious given how "for-dummies" the article starts out as). So what are Church numerals? And what's so important about the Y-Combinator that pg would name his company after it? I didn't know either, and the journey begins! But also, just download clojure to mess around with a Lisp. Once you feel comfortable with the basics, check out core.logic.