August 25, 2026
APIs and databases
The server half: HTTP as it actually works, a real relational schema, and auth you have not invented yourself.
ReadSkill: SQL
August 25, 2026
Full-Stack Web
HTML, TypeScript, React, Node and databases — in the order that lets each one earn the next, ending in a product on a real domain with real users' data in it.
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Data & Analytics
SQL, pandas, statistics and visualisation — plus the part that actually gets people hired: turning an analysis into a decision somebody acts on.
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SQL foundations
The single highest-leverage skill in this field. Joins, aggregation and window functions, in that order.
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