*.tex The raw text file TEX or LATEX code
*.log Log file generated by latex or
pdflatex -shows you errors
*.aux Auxilliary file, contains cross-referencing
information. Generated by latex or pdflatex
*.toc Table Of Contents file-contains TOC data.
Generated by latex or pdflatex
*.dvi Device Independent File. Used to preview your
document before printing. Generated by latex
*.ps PostScript file, can be created, if desired for
additional preview before printing, or to take to a professional
printer. Generated by dvips
*.pdf PDF file, that can be created and easily published
on the WWW or used as final output. Generated directly by
pdflatex, or by converting the .ps file to a
.pdf file.