While researching for my university work, I stumbled upon this nice Latex tutorial and howtos collection written by Andrew Roberts.
Latex is typesetting software. It is widely used by mathematicians, scientists, and engineers, in academia and commercially. LaTeX is intended to provide a high-level language to access the power of TeX. LaTeX is essentially comprised of a collection of TeX macros, and a program to process LaTeX documents. Since TeX's formatting commands are very low-level, it is usually much simpler for end-users to use LaTeX.
From the home page:
Latex has been the de facto document processing system within the scientific community for years and years. There's a good chance within your research life, that you will be required to create a research paper using Latex. But there are good reasons for using Latex other than just because a publisher asks you to. Find out why I think Latex is better than MS Word.