In reply to EmmaAtkinson:
The "Rock Climbing Yosemite Valley" book is good, lots of routes, although getting to some of the crags is "tricky" from the descriptions! When you buy the guide you also get a code to view the topo's on-line via the Vertical Life Climbing App it then mean's you don't have to lug the guide to the crag.
A few interesting finds we made from the guide were:
1. Chapel Wall, Great Escape
2. Lower Falls Amphitheatre, Ten Years After
3. Mecca, King for a Day
4. Public Sanitation, Afterburner
5. Killer Pillar, Bucket Brigade
Have fun