Thanks for reaching out to us. It's a pretty simple process to change your password. Just follow these steps.
1. Go here: http://www.trulia.com/account/settings/
2. Click "Email and Password & Facebook Connect"
3. Type in your new password, and type it in again to reconfirm.
4. Click "Save"
Is there anything else I can help with?
Community Manager, Trulia Voices