Renaissance Research Labs - Tex References

For those interested in why it is pronounced Tek, the last letter is the Greek letter chi, not the English x.

CTAN's getting started guide gives you all you need to know plus a list to a number of really useful guides. This is probably the best place to start.
Graphics: epslatex is the standard way to include eps files in a tex document.
Graphics: using Windows graphics in Tex.
Graphics: a good overview of graphics in Tex.
Tex has lots of symbols you can use.
The English Tex FAQ is a great source of information.
A great coverage can be found in the (not so) short introduction to Tex.
Peter Flynn has a nice manual, Formatting Information and it is even copyleft!
Another good online manual is LaTeX Tricks
A good reference for thesis and discertation formatting is Using LaTeX to Write a PhD Thesis. Note this one is a pdf.