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Your email is your account — a one-time sign-in link, nothing to remember or leak, and it saves your place so you can pick up the sample later. We never sell or spam it, and the free 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 deep dives
Hands-on practice
Most people continue with the course.