The SIMIND Manual
From this relsease the manual is a pdf file that you can download and that has a Table of Contents as bookmarks to the left. It include a detailded description of the parameters nessecary to define prior to a simulation.
It also include six tutorials that you can try to get going with the program. These goes for from simulation of a simple point source to a Whole-Body planar simulation and a SPECT simulation.
If you find something that is strange explained or you have a question that you think can be of interest for others to include in the FAQ then please email this to me.