Applescript & Mail

I am very new to applescript and I am having some teathing troubles. I am trying to create a list of email addresses from emails arriving into a particular mailbox. I think I have the logic right,

1. Open Mail

2. Go to the mailbox i need

3. Go to the first message

4. Get the email address

5. Put the address in a text file

6. Repeat for all the emails in the mailbox

I'm stuck on number 2, generally how to select items i need in Mail, any help with this would be great.

If anyone also knows of a good book that might lean towards scripting with Mail, it woud be really helpful.

Thanks in advance!