How do I make the Close Date default to Today when creating an Oppty?

Thank you

Hello,

I was trying to add a formula to a field and i need to use some custom fields i created. The problem is i cannot find the field i created. When i show the formula editor, i only have 3 types of field type, organization, system and user. But none of them contain my custom fields. How do i add my custom fields into a formula?

Thanks