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xKat organizes all learning as a knowledge graph — a connected universe of skills you can explore in 3D, rather than a flat list of courses.

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Nodes and prerequisites

  • Each node is a focused skill or concept.
  • Nodes are linked by REQUIRES relationships: an edge from A to B means you should learn B before A.
  • Following these edges produces a natural learning order — the basis of your roadmap.

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Exploring in 3D

The graph is rendered as an interactive 3D skill tree. You can:
  • Pan and zoom to navigate clusters of related skills.
  • Select a node to see its lessons, prerequisites, and what it unlocks.
  • Trace a path from a foundational skill to an advanced goal.

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Your progress on the map

As you complete lessons, the corresponding nodes reflect your progress, so the graph doubles as a map of how far you’ve come and what’s still ahead.
The same graph that learners explore is what creators design in the Studio. See Designing the Knowledge Graph and the architecture behind it.