After years of contributing to the Common Lisp Cookbook, I am glad to make it available as a PDF and an EPUB version! It is *free* if you wish, but you can also *pay what you want* to further support its development. Thank you! *You can read the Cookbook online here: lispcookbook.github.io/cl-cookbook * I hope the Cookbook serves you well, as a learning material, as a reference (loop!), as a way to discover the Common Lisp ecosystem, but most of all as a way to getting started quickly with no fuss. Just show me code! This EPUB represents the work on the span of more than four years where I have been constantly reading, experimenting, asking, discovering tips, tools, libraries and best-practices, built-in or not, all of which should have been easily accessible but were not. Now they are. Reviving the Cookbook project resonated in the community, as other lispers sent great contributions. If you ever considered donating, thank you! Yes, it makes a difference and here is why: because I don't have a fixed nor big revenue right now, which is also why I can give that much time to Lisp activities, but that won't last for long unless I find more revenue sources; because I want to improve both the content and the online version even more (the online version, while better than the original one on SourceForge *cough* *cough*, doesn't look like a world-class website yet), because with funds I'd pay contributors for the low-hanging fruits. TLDR; the money has a great impact :] (note: I am also on Github sponsors: github.com/sponsors/vindarel) By the way, who am I to sell Cookbook-related stuff ? I am the main contributor, by far (look at github.com/LispCookbook/cl-cookbook/graphs/contributors). I wrote many chapters from scratch (data structures, CLOS, web, GUI, scripting and building binaries…). Before this, there was information, but it was totally spread apart, and that made entering the Lisp world even more difficult. I ported (and edited) several chapters from existing blog posts (error handling, iteration, databases, debugging…), and I edited more pieces here and there. While we're at it, I also made awesome-cl the useful list that it is today, and I develop libraries, software and example templates. See more: lisp-journey.gitlab.io/about Of course, this is not *my* book, I didn't write everything. Here I (gently) promote myself, but there is room for other contributors to chime in, if they wished, as I told them on GitHub. Thanks again, and see you in the issues. Best,