User ManualA user manual can be downloaded here.
LearningIn the sub-directory tutorial in the main GWL directory you can find a tutorial including examples. Please refer to the pdf file.
Note that the calculation parameters used in the examples do not assure complete convergence. In particular, for Si crystals the minimum cell size should contain at least 64 atoms.
Note that due to the iterative algorithms used and to the analytic continuation procedure, small differences in the GW energies can be observed.