The two most important outputs of any simulation are 1) the total energy and 2) the relaxed structure!
Unix Guide
Using QUEST
Computational research
Shell Scripting
GULP input
GULP output
LAMMPS input
LAMMPS output
FAQ
Density Functional Theory
Guide to PWSCF (adapted from G. Ceder and N. Marzari's 3.320 course at MIT)
General FAQ (partly adapted from above)