This page provides a list of articles which focus on providing background technical information on a wide range of TeX- and LaTeX-related topics. New articles are continually added so be sure to bookmark and revisit this page!
Multi-part article series
Background reading
TeX tokens
Kpathsea and file searching
LaTeX page layout
LuaTeX
Unicode, UTF-8 and multilingual work
Understanding TeX boxes
TeX tables
Mathematical typesetting
Miscellaneous topics