I used to make website with drupal 6 and I defined new content type using new node type. 

I tried to do the same thing with drupal 7... But after some readings I discover it could not be the right way. 

Must I used entity ? I want to access my new type as it was node with ?q=node/add/my-new-type

I search for goods tutorials but didn't find somes.

Thanks in advance for any help or any advice.

Nicolas