# The halo2 Book

[halo2](README.md)
- [Concepts](concepts.md)
- [User Documentation](user.md)
  - [A simple example](user/simple-example.md)
  - [Lookup tables](user/lookup-tables.md)
  - [Gadgets](user/gadgets.md)
  - [Tips and tricks](user/tips-and-tricks.md)
- [Design](design.md)