CTAN-Web Home Page

Here you can search for the program you need

And here you can get it with a maximal speed (Russian Mirrors of CTAN):

http://www.chg.ru/ftp/TeX/

ftp://ftp.radio-msu.net/pub/CTAN/

The standard English-German EMTeX package

XYpic package (commutative diagrams)

Programs for Windows:

TeXshell32 (A very convenient TeX shell for Windows 95)
TeXedit (TeX shell for Windows 3.11)
DviWin (Dvi-viewer for Windows 3.11, Windows 95, Windows NT)

Guides in TeX, AMSTeX and LATeX