Hi Ivan,
Excellent progress with your new Star Analyser (SA100) ... now the serious work starts, learning how to process the raw spectral data! While there are a few free, and commercial, software programs that do this task I strongly recommend Buil's free ISIS.
http://www.astrosurf.com/buil/isis/isis_en.htm. I've been using ISIS for a number of years and it is constanly improving. I believe Terry also uses it. You also need to subscribe to at least one of the serious (dedicated) spectroscopy groups. I can get you the links if needed.