I was wondering for weeks about installing Latex (Tetex for .deb users). Husse helped this newbie for a long time. I am thankful to him for his help and guidance (and for etiquette for posting problem in the forum).
Finally, the solution arrives from A. Mani (TUG India) for installing TeTex in Cassandra through synaptic package manager.
1. Simply install Kile or Texmaker and Vim (latex mode). Most of the basic things will get installed automatically.
2. Then you must decide on the language packs (CJK, Arabic, Indic, etc.), fonts and converters like latextohtml, latextortf, etc.
3. The menu entry (Tex) will appear in the menu list.
4. Texlive is better than Tetex.
For the road: I am currently editing&formatting a proceedings volume. It is such a tedious job (especially formatting) that I no longer wonder why people use Tex.