Your photos can either be in the Gallery app, you can also access through the Camera app, access it (in the cloud) through the Photos app, or access it through Google+.
You can find the Nexus static wallpapers if you do an image search. If you're looking for the Nexus live wallpapers, you can find those in the Google Play store.
The Google Play Store and the Amazon Appstore are two good places to find quality apps for your Nexus 5.
The Nexus 4 is on backorder at the Google Play store as of 11/30/12 but you can find it at amazon or on ebay. Squidoo keeps track of the prices, see related link
Google Images
google jackass
Giantessbooru google it
Google it or go to a library
Google images.
use google
You can find haircut photos for 12 year old boys on Google. You can also find haircut photos on the site, Pinterest.
Yes there are. Many millions of photos. If you google Holocaust photos you will find alot of interesting info and photos about it.