Download a trial version of SALT. Then open one of the sample files and generate several analyses. Or try typing in and analyzing one of your own samples. See how easy the software is to use and how much great data you can pull out of a short language sample.
The trial versions of the software are identical to the purchased/activated versions except that analysis and error checking are limited to the first 15 utterances.
Check for available service packs for SALT 16 and SALT 2012.