Clojure

1. The Reader

   Literal syntax and reader macros.

2. Evaluation

   How forms are evaluated, special forms, and vars.

3. Special Forms

   def, if, let, fn, loop/recur, and other primitives.

4. Data Structures

   Lists, vectors, maps, sets, and persistent immutability.

5. Sequences and Laziness

   The seq abstraction and lazy sequences.

6. Namespaces and Vars

   Namespaces, vars, and require.

7. Macros

   Writing macros, syntax-quote, and macro hygiene.

8. Protocols and Datatypes

   defprotocol, deftype, defrecord, and reify.

9. Multimethods and Hierarchies

   Runtime polymorphism via multimethods.

10. Atoms, Refs, and Agents

    Managing state: atoms, refs and STM, agents, and transients.

11. Java Interop

    Calling Java classes and methods from Clojure.

12. Transducers

    Composable algorithmic transformations.

13. Deps and CLI

    Dependency management and the clj tool.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.