How can I get my address book to come up when I'm sending a email?

I could click on address book on the old Yahoo email but now I can't.
How can I get my address book to come up when I'm sending a email?
The easiest way in both old and new Yahoo is just to click the "To:" next to the addressee field (when you're on the compose page, that is). The email addresses in your address book will pop up in a separate window. Select one or more email addresses, click OK, and it will fill them in for you.
Reply:above the bar where you put the addresses for the people you want to send the e mail to there is a little thing that says insert contacts and from there you check the contacts that you want the message to be sent to the push the button that says insert checked contacts
Reply:It's simple just click on the word addresses then click on the address you want and then your letter that you type on will pop up.
Reply:After you click on "Compose", a box will open up with a "From Line", a "To Line" and a "Subject Line". Below this will be the area that you type the message.





If you click on the "To Line" it should open up your address book and let you choose the name you want to send mail to. Put a check mark next to your choice, scroll up to the top where it says Insert name and click on it.