If you prefer hands-on learning, How to Design Programs is pretty good resource for the foundations, with lots of examples and exercises: https://htdp.org

But learning the basics of lisp is more like a side effect, the focus is on program design.

HtDP users would probably also be interested in looking into some of the old courses based on it. List courtesy of charlysl: https://news.ycombinator.com/item?id=18891945 .

Thanks a lot. I’ve heard about this too, but didn’t spend time to follow through on reading it.