How do I change, edit, my yahoo email address?

You can't. Your best bet is to either stay with the same address or delete the current one and set up a new one.

To edit your email address: Visit the Email Control Panel and click the "Edit User" link under your name. On the following page, click "Change email." In the pop-up that opens, enter the new email name. Note that your email address can include only letters, numbers, hyphens, periods, and underscores. Note: When you change your email address, mail sent to the original address will be returned to sender (unless you have a catch-all mailbox). When you're done, click "Save." Here's how to change your alternate email address: Go to any of Yahoo!'s personalized properties (such as Yahoo! Mail, My Yahoo!, etc.) and sign in to your account. Click on the My Account or your user name in bold at the top of the page. Click on the "Edit" button next to "Member Information." This screen will allow you to change your alternate email address and choose which address you would like as your primary alternate email. This means that we'll send you information about your account, such as a confirmation message after you've changed your password, to this address. Please make sure to click the "Finished" button after you've edited any information. Follow the steps to verify your alternate email address so that you can request a new password via email and use your new email address within all of Yahoo!'s services.

you can't, you just dump it and get another.

just get a new one.

make a new account.