At the top of the homepage you can click on "New property alert". From there you can create a filter that matches your housing criteria. You will receive notifications when a home matching that criteria becomes available.
When you have an account with us, you can also easily create and manage your search agents from your profile. Go to the Search Agent section, where you can add, edit, or delete your search agents. You can also create several different search agents to match your preferences and receive alerts for multiple types of listings.