To find other people's profiles click on the "Search Profiles" button in the main menue on the left hand side of the page.

This should take you to the profile search page where you have 3 options to choose from:
First is "Simple" where you simple type in the demographic you wish to search for."
Second is "Advanced" where you select which demographics you wish to search for, and example would be you want to find people in California, so you would simply type in "California" or "CA" into the location box.

You have the option to narrow your search by selecting "Equals" as opposed to "And" which will only bring up the exact criteria for your search.