Some advices before you start to work with Latex/Kile:

Quote from University of Illinois:

• Avoid manual formatting commands. Of all the mistakes people make when typesetting LaTeX, attempting to format text manually instead of using predefined LaTeX macros for this purpose, is probably the most common. and the most frustrating for a publisher.

• Avoid using nonstandard documentclasses; use article or amsart (or, for book-size documents, book) as documentclass. The "article" and "amsart" documentclasses are all-purpose documentclasses that are part of the standard TeX distribution and which can be used for almost everything, not just "articles." The two classes format articles differently (e.g., section headings are set in different font sizes), so pick whichever you like best.

• If you use the article class, be sure to load the ams packages with \usepackage{amsmath, amsthm}.

• To enlarge or scale a LaTeX document, increase the font size by adding the option "[12pt]" or "[11pt]" to the documentclass. The plain TeX \magnification command does not work with LaTeX.
• Use the "graphicx" package to include graphics produced by external programs. The ideal graphics format for inclusion in a LaTeX document is "encapsulated postscript" or eps.
• Commutative diagrams. Simple diagrams can be created with the "CD" environment, provided by the "amscd" package (to load this package, add the line "\usepackage{amscd}" to the preamble). This environment is derived from the \CD ... \endCD environment in amstex, and the syntax is basically the same. For more complex diagrams, there is the "xy-pic" program (to be loaded by the line "\usepackage{xy}"), an amazingly powerful and versatile tool, with which you can draw pretty much every diagram that you might encounter in mathematics.

The Linux4afrika team will try to make the whole content offline available http://www.math.uiuc.edu/~hildebr/tex/basics.html