If you only install one important app, make sure that it is :
SEARCH EVERYTHING (found on Slideme Marketplace)
http://slideme.org/en/application/search-everything
Put it on your home screen, start typing your search criteria and this phenomenal program WILL find all programs,apps,bookmarks and mentions stored on your system. I have the PC version of this and it blows the search function that Mircrosoft have clean out of the water. A definite keeper !!!!!