This is for indie publishers. Lori Devoti has a number of articles but these are the ones I use.
Formatting your ebook in Word http://howtowriteshop.loridevoti.com/2010/11/how-to-format-ebook-word/
and a must-read update http://howtowriteshop.loridevoti.com/2012/03/microsoft-word-tip-how-to-save-those-italics/
My Author Tool Bag features sites I use in writing, editing, and marketing. It's stuff I've found online. The usual caveats apply--no recommendations either expressed or implied, don't click on blind links, have a good antivirus, etc. You know the drill.