diff --git a/edu/.claude/skills/work/SKILL.md b/edu/.claude/skills/work/SKILL.md
new file mode 100644
index 0000000..035e39a
--- /dev/null
+++ b/edu/.claude/skills/work/SKILL.md
@@ -0,0 +1,11 @@
+---
+name: work
+description: work on the highest priority thing
+---
+
+* If a ticket ID or description of a ticket is provided, look for that ticket.
+* If no ticket/description is provided, use nbd next to choose the ticket to work on.
+* Implement the plan in the selected ticket.
+* Update the ticket with the new status.
+* Create additional tickets based on work that may have come up during this work.
+* Commit changes with a concise message and reference the ticket ID.
diff --git a/edu/.envrc b/edu/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/edu/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/edu/.gitignore b/edu/.gitignore
new file mode 100644
index 0000000..3006b27
--- /dev/null
+++ b/edu/.gitignore
@@ -0,0 +1 @@
+book/
diff --git a/edu/.nbd/.gitignore b/edu/.nbd/.gitignore
new file mode 100644
index 0000000..be8efad
--- /dev/null
+++ b/edu/.nbd/.gitignore
@@ -0,0 +1 @@
+cache.db
diff --git a/edu/book.toml b/edu/book.toml
new file mode 100644
index 0000000..5d26796
--- /dev/null
+++ b/edu/book.toml
@@ -0,0 +1,7 @@
+[book]
+title = "Vibed Learning"
+language = "en"
+src = "src"
+
+[output.html]
+default-theme = "navy"
diff --git a/edu/flake.lock b/edu/flake.lock
new file mode 100644
index 0000000..79591bd
--- /dev/null
+++ b/edu/flake.lock
@@ -0,0 +1,114 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nbd": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      },
+      "locked": {
+        "path": "../nbd",
+        "type": "path"
+      },
+      "original": {
+        "path": "../nbd",
+        "type": "path"
+      },
+      "parent": []
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1771369470,
+        "narHash": "sha256-0NBlEBKkN3lufyvFegY4TYv5mCNHbi5OmBDrzihbBMQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "0182a361324364ae3f436a63005877674cf45efb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1771923393,
+        "narHash": "sha256-Fy0+UXELv9hOE8WjYhJt8fMDLYTU2Dqn3cX4BwoGBos=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "ea7f1f06811ce7fcc81d6c6fd4213150c23edcf2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nbd": "nbd",
+        "nixpkgs": "nixpkgs_2"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nbd",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1771816254,
+        "narHash": "sha256-vkp3iTF6QmHMvL+34DI93IiMPjS2lqcMlA1fl7nXVsQ=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "085bdbf5dde5477538e4c87d1684b6c6df56c0ad",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/edu/flake.nix b/edu/flake.nix
new file mode 100644
index 0000000..a0064b6
--- /dev/null
+++ b/edu/flake.nix
@@ -0,0 +1,28 @@
+{
+  description = "Vibed — edu dev shell";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    nbd.url = "path:../nbd";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, nbd }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          buildInputs = [
+            pkgs.mdbook
+            nbd.packages.${system}.nbd
+          ];
+
+          shellHook = ''
+            echo "vibed/edu dev shell loaded"
+          '';
+        };
+      }
+    );
+}
diff --git a/edu/src/SUMMARY.md b/edu/src/SUMMARY.md
new file mode 100644
index 0000000..c919dc5
--- /dev/null
+++ b/edu/src/SUMMARY.md
@@ -0,0 +1,9 @@
+# Summary
+
+# Markov Chains
+
+- [Markov Chain Course](markov.md)
+
+# Git
+
+- [Git Worktrees](git-worktrees.md)
diff --git a/edu/git-worktrees.md b/edu/src/git-worktrees.md
similarity index 100%
rename from edu/git-worktrees.md
rename to edu/src/git-worktrees.md
diff --git a/edu/markov.md b/edu/src/markov.md
similarity index 100%
rename from edu/markov.md
rename to edu/src/markov.md