Some LaTeX-related Tips

is a nifty piece of code that does exactly that - transforms Excel tables to LaTeX with a single click.
Here's a comprehensive list of
LaTeX symbols (pdf document) from CTAN for quick reference.
LaTeX primer by the Indian TeX User's Group is a good beginner's level guide, an alternative to
A (Not So) Short Introduction to LaTeX2e".
LyX is a WYSIWYM (What You See Is What You Mean) editor which combines LaTeX with a graphical interface. It's a useful shortcut to LaTeX - gives you LaTeX results without having to learn the code!
The package
savetrees packs as much text as possible into a page of a LaTeX document - comes in handy when fighting with the tight page-length restrictions for conference or journal submission.
Subversion Versioning System

SVN, short for Subversion, is a version control system which can be a very useful organizational tool for researchers. It allows you to maintain several versions of your documents and files and offers an easy way to keep track of changes made over time. It also makes it easier for co-authors to work on documents simultaneously and merge changes. SVN is the successor to Concurrent Versions System (CVS). Read this Subversion Wiki. Download SVN here. Tortoise SVN is an easy to use Windows client.