Andrew Wheeler's Blog
Andrew is a doctoral student in Criminal Justice at the University at Albany, SUNY. The blog contains, among other research stuff, materials on SPSS, syntax samples with comments and output examples. Several posts are devoted to charting facilities of SPSS, and GGRAPH command, in particular. I came across his site while looking for the SPSS syntax draft to draw violin plots in SPSS.
Link added: Jan. 31, 2015