This topic contains packages with tutorial material (general).
How to draw technical diagrams with METAPOST.
A short list of go-to LaTeX packages, aimed at a beginner.
A short introduction to LaTeX installation written in Chinese.
LaTeX-based interactive PDF on the Web.
A guide for combining LaTeX and music.
Chinese introduction to mathematical alphabets.
A tutorial on the use of Patgen 2.
Typesetting mathematics in colour, in (La)TeX.