problem with the link after create the first site collection

Hello to everybody

I m new to SharePoint technology, and I try to learn SharePoint 2010 (ok I know it is old but I have it from MSDN subscription)

After I install and setup my first SharePoint farm with the wizard, I build my first site collection.

In Central Administration panel I have two Web Applications.

Name                                                                URL                                       Port

- SP2010                                                     http://sp2010/                  80

- SharePoint Central Administration v4      http://sp2010:80/              80

Then I create a site collection, and I select /sites/ from the dropdown menu and enter intranet in the blank field to the right of the drop-down (Web Site Address section from Central Administration>Create Site Collection.

OK the problem is after that, when I try to create a team site the server always show me at the textbox of URL name this option:

http://SP2010:80/             and not            http://SP2010/sites/intranet/

Did I miss something ?

Thank you for your time

Bill Sams

P.S.

If this problem was written again by other user please send me the link to read it