How can I find my old email address? and how can I enlarge my window?

I need to know how to insert my address from the address book.


And I also need to know how to cut off the useless ad egde on the right because my window is too small now.

How can I find my old email address? and how can I enlarge my window?
The window is made so you have to see the ads. The adds pay for all the free stuff.