diff --git a/levels/intro/motivation b/levels/high-level/motivation similarity index 100% rename from levels/intro/motivation rename to levels/high-level/motivation diff --git a/levels/intro/restore b/levels/high-level/restore similarity index 100% rename from levels/intro/restore rename to levels/high-level/restore diff --git a/levels/intro/sequence b/levels/high-level/sequence similarity index 100% rename from levels/intro/sequence rename to levels/high-level/sequence diff --git a/levels/intro/setup b/levels/high-level/setup similarity index 100% rename from levels/intro/setup rename to levels/high-level/setup diff --git a/levels/internals/basics b/levels/low-level/basics similarity index 100% rename from levels/internals/basics rename to levels/low-level/basics diff --git a/levels/internals/blob-create b/levels/low-level/blob-create similarity index 100% rename from levels/internals/blob-create rename to levels/low-level/blob-create diff --git a/levels/internals/blob-remove b/levels/low-level/blob-remove similarity index 100% rename from levels/internals/blob-remove rename to levels/low-level/blob-remove diff --git a/levels/internals/commit-create b/levels/low-level/commit-create similarity index 100% rename from levels/internals/commit-create rename to levels/low-level/commit-create diff --git a/levels/internals/commit-parents b/levels/low-level/commit-parents similarity index 100% rename from levels/internals/commit-parents rename to levels/low-level/commit-parents diff --git a/levels/internals/commit-rhombus b/levels/low-level/commit-rhombus similarity index 100% rename from levels/internals/commit-rhombus rename to levels/low-level/commit-rhombus diff --git a/levels/internals/conflict b/levels/low-level/conflict similarity index 100% rename from levels/internals/conflict rename to levels/low-level/conflict diff --git a/levels/internals/index-add b/levels/low-level/index-add similarity index 100% rename from levels/internals/index-add rename to levels/low-level/index-add diff --git a/levels/internals/index-remove b/levels/low-level/index-remove similarity index 100% rename from levels/internals/index-remove rename to levels/low-level/index-remove diff --git a/levels/internals/index-update b/levels/low-level/index-update similarity index 100% rename from levels/internals/index-update rename to levels/low-level/index-update diff --git a/levels/internals/puzzle-apocalypse b/levels/low-level/puzzle-apocalypse similarity index 100% rename from levels/internals/puzzle-apocalypse rename to levels/low-level/puzzle-apocalypse diff --git a/levels/internals/puzzle-precious-blob b/levels/low-level/puzzle-precious-blob similarity index 100% rename from levels/internals/puzzle-precious-blob rename to levels/low-level/puzzle-precious-blob diff --git a/levels/internals/puzzle-trees-all-the-way-down b/levels/low-level/puzzle-trees-all-the-way-down similarity index 100% rename from levels/internals/puzzle-trees-all-the-way-down rename to levels/low-level/puzzle-trees-all-the-way-down diff --git a/levels/internals/ref-create b/levels/low-level/ref-create similarity index 100% rename from levels/internals/ref-create rename to levels/low-level/ref-create diff --git a/levels/internals/ref-move b/levels/low-level/ref-move similarity index 100% rename from levels/internals/ref-move rename to levels/low-level/ref-move diff --git a/levels/internals/ref-remove b/levels/low-level/ref-remove similarity index 100% rename from levels/internals/ref-remove rename to levels/low-level/ref-remove diff --git a/levels/internals/sequence b/levels/low-level/sequence similarity index 100% rename from levels/internals/sequence rename to levels/low-level/sequence diff --git a/levels/internals/symref-create b/levels/low-level/symref-create similarity index 100% rename from levels/internals/symref-create rename to levels/low-level/symref-create diff --git a/levels/internals/symref-no-deref b/levels/low-level/symref-no-deref similarity index 100% rename from levels/internals/symref-no-deref rename to levels/low-level/symref-no-deref diff --git a/levels/internals/tree-create b/levels/low-level/tree-create similarity index 100% rename from levels/internals/tree-create rename to levels/low-level/tree-create diff --git a/levels/internals/tree-nested b/levels/low-level/tree-nested similarity index 100% rename from levels/internals/tree-nested rename to levels/low-level/tree-nested diff --git a/levels/internals/tree-read b/levels/low-level/tree-read similarity index 100% rename from levels/internals/tree-read rename to levels/low-level/tree-read diff --git a/levels/internals/welcome b/levels/low-level/welcome similarity index 100% rename from levels/internals/welcome rename to levels/low-level/welcome