How do I add a Facebook account for my wife as a separate account?

If you want to have secrets from your wife, recommend getting your own separate computer...

Shirley,
You have to use separate e-mail accounts. My wife and I ran into this.

https://help.fitbit.com/customer/portal/articles/183855-can-i-use-multiple-trackers-with-one-account-

http://www.quora.com/Fitbit/Can-one-Fitbit-base-sync-two-Fitbits-linked-to-separate-accounts

http://www.myfitnesspal.com/topics/show/1221397-multiple-fit-bit-products-one-computer

It isn't currently possible to merge separate Google Accounts. However, if you'd like transfer your data from one account to another, this may be done on a per product basis. Or, to start using a new product, you don't have to create another Google Account. Just sign in with your existing Google Account, and visit this list of products to get started.
If you don't have Gmail, you can add it to your account at any time.
If you signed up for Gmail and didn't add it to your existing account, now you have two separate accounts.
Note: if you're adding a new Gmail address to your Google Account, you can't choose an existing Gmail username (even if you delete the other account with Gmail, you can't reuse the Gmail username.)

Point your web browser at http://www.facebook.com

If your account comes up, log out of it by clicking the little gear icon in the upper-right then clicking "Log Out." You'll then be able to create a new account for your wife.

You can't log into the second account even after logging out of the first one?

You can't do it this, however you can add your wife's facebook account then promote it to a page administrator, for more facebook tips visit

Windows Tips Club on Facebook

SpideRaY

1) Create a new email for you wife.
2) Make sure that you sign out if you wife want to sign in. Go to facebook main page (http://www.facebook.com) instead the login page.
3) If the steps failed, the easiest way is to clear your private data on the browser.

Cheers

you have to have your own email . get one through yahoo or aol