Some good LaTeX documention I found: 

Fancy Table Tutorial: http://en.wikibooks.org/wiki/LaTeX/Tables 

The Harvard LaTeX Math Guide: http://www.math.harvard.edu/texman/

Useful LaTeX figure guide: http://www.cqf.info/forum/viewtopic.php?p=9029  

well, and of course /usr/share/doc/tetex.../... 

LaTeX Templates:

• I just helped writing a diploma thesis. I decided tu publish a  template for a diploma thesis in germany at the TU Berlin. download here 
  
• Yet Another LaTeX Template (suited for a small report): yalt.zip
  
• The best of all: A report for the course "Information Rules 1" written by Mario Bodemann, Robert Buchholz, Tobias Himmelsbach, Jonas Hurrelmann, Daniel Kaes, Ellen Michelsen: inforules_gutachten.zip