Course catalog
Every published topic across all tracks. Search, filter by track, and jump straight to what matters to you.
Level 0 — Foundational Thinking
Semantic Web Foundations
Build semantic intuition and learn just enough syntax before Level 1.
Level 1 — RDF Core
Semantic Web Foundations
Every fact in the Semantic Web is a triple. Learn the atom.
Level 2 — Turtle Mastery
Semantic Web Foundations
Write fluent, compact Turtle — the human-friendly RDF syntax.
Level 3 — RDFS & Lightweight Reasoning
Semantic Web Foundations
Hierarchies of classes and properties — the first step into inference.
Level 4 — OWL & Inference
Semantic Web Foundations
Express richer semantics: inverse, equivalent, transitive, symmetric.
Level 5 — SPARQL Query Language
Semantic Web Foundations
From basic graph patterns to professional querying: joins, OPTIONAL left-joins, negation, aggregation, property paths, subqueries, and the evaluation semantics that decide whether a query is correct *and* fast.