To get the most out of Catch2, start with the tutorial.
Once you're up and running consider the following reference material.
Writing tests:
* Assertion macros
* Matchers
* Logging macros
* Test cases and sections
* Test fixtures
* Reporters
* Event Listeners
* Data Generators
* Other macros
Fine tuning:
* Supplying your own main()
* Compile-time configuration
* String Conversions
Running:
* Command line
Odds and ends:
* CMake integration
* CI and other miscellaneous pieces
FAQ:
* Why are my tests slow to compile?
* Known limitations
Other:
* Why Catch?
* Open Source Projects using Catch
* Contributing
* Release Notes
* Deprecations and incoming changes