I have been using Rob Matson's Skymap (now version 5.10) for at least a year. Perhaps the initial use involved some learning, just as others have. But I love the graphical representations of satellites against the stars. It is a very capable program with lots of options, which may add to an initial sense of confusion. Bottom line is that it is my FIRST choice in satellite tracking programs. I do use other fine programs such as STSPLUS (great for understanding ground traces) and TRAKSAT. Ron Lee