If you want to know how to use the GPAW code, we recommend looking at the Tutorials and consulting the Manual pages.

If you are just looking for an introduction to the theory of PAW, you should have a look at the page Introduction to PAW, read this pdf file on PAW theory, or maybe read some of the original Articles on the PAW formalism.

If you want some general information on the numerical techniques utilized by the GPAW code, you should read the page Features and algorithms.

Developers should consult the Development pages.

If you can not find what you are looking for in any of the above, please consult the Mail List.