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Your email unlocks the app itself — the same reading and course platform paying members use, with your free sample already waiting inside. It’s a one-time sign-in link, not a password: nothing to remember, nothing to leak, nothing we’ll ever sell or spam. The sample stays free for as long as you want it, no card required.
590 pages, 53 chapters — a spiral path through PostgreSQL, from your first query to vector search and custom extensions.
Free sample: the Preface plus hand-picked chapters across every part.
Same reading experience as the full book — same layout, same runnable query blocks — just a limited set of chapters unlocked. You get the full Preface and the complete table of contents, so you can see exactly what the book covers before deciding: a definitive preview, not a teaser.
6 courses, 48 modules — Course Companions, slides, and hands-on exercises on real datasets, Core through Architect tier.
Free sample: hand-picked modules from each course.
Same platform as the paid courses — same slides, same Course Companions — with the first module of every course open to read. Exercises and quizzes are part of the paid course, not the preview: enough to judge the teaching, not to finish the course for free.
Learn → Practice → Apply → Master
Foundation & reference
Structured learning
Live sessions with the author
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