How do I create a distribution list from my email contacts? I have the beta yahoo account?

Click on the Contacts in the left column. Across the top choose Add List. Create your list title and then start adding contacts. As far as I know, you have to start typing the contact name you want, then choose them. I did not see a way to pull up the contacts list and insert them, but typing the first few letters of the names brings up the matching contacts and it was pretty quick to insert them.