One purchase gets the Digital Edition Bundle: Volume I EPUB, light and dark PDFs, slides, cheatsheets, and future updates. No subscription. No paywall on the content. Ever.
The book is free to read online. No account, no paywall, no drip-feed. Just read it.
The slides, cheatsheets, EPUB, and light and dark PDFs are there if you want something to keep offline - or want to support the writing while it's still in progress. That's it.
If you're not big on long-form theory, the slides are worth it. More focused, illustration-heavy, and built for a different pace - same depth, less prose.