I happen to know a thing or two about printing, PDF, PostScript, PJL, Fonts and related stuff.
Also familiar with some bits and pieces of Linux, Unix, Samba and Solaris printing. Not to forget bash programming and Windows cmd.exe batch scripting. I also do consultancy in these topics.
If you want, I share some of this knowledge here and on Stackoverflow (SO). Just click to browse for all.
Stackoverflow.com:
Superuser.com:
Serverfault.com:
Server Fault
Q&A for professional system and network administrators
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Ask Different
Q&A for power users of Apple hardware and software
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Mathematics
Q&A for people studying math at any level and professionals in related fields