Overview of Yosemite Valley for New Visitors
Scott Moses has a summary writeup of places to visit in Yosemite, focusing on the valley area:
LiveOnceWild.com: Complete Guide to Yosemite
I spend my time these days in the Eastern Sierra and Yosemite in the high country*, but first time visitors will want to see the valley area for sure.
* For me at least, the crowding and the sound of buses along even at the top of El Capitan makes the valley as non-wilderness as it gets in Yosemite, making it unattractive to me, not to mention the difficulty and crowding and/or cost of staying over night. But it is beautiful nonetheless.