Creating a document library witha custom template

What I want is basically a good solution for people to be able to fill out a form on the web and then save it in the online library.

You need to be able to automatically create a document from a template in just one or two clicks from the page and then automatically save it to the online-library.

When this is done, the admin of the site will get a notification (this i think i know how to fix thought) so he can examine the new document instantly.

How can this be done?