Yes, your email address will change. Each Email address has a particular account. Thus duplication is not possible here.
The Gmail address cannot be changed later on. The address is a permanent one and cannot be changed. It is the unique ID that is provided to you.
You can transfer your email address to your Gmail address book. Gmail can import various contacts from others. This can be done in the settings and then import.
an email address that is not your main one, but a back up. like Gmail.
No, you can't find anyone's email address from Gmail. It is not like social networking websites. You cannot peek into other's profiles.
andypbvb on gmail
Depends what email it is, like yahoo you can but not on gmail or aim
The Google apps email address is for you to access the app store. It is not an actual email address.
Sadly, you cant! :(
You can send chat request to your friends on GMail if you know their email address.
You cannot change your Gmail email address, and must create a new account. However, you can add dots to your address, and it will still go to your account: Example: Emails that get sent to m.ya.dd.re.ss@gmail.com will go to myaddress@gmail.com
Gmail is short term for google mail. It is email run by google. So technically it's email with less spam and junk.