Hi Mehdi,
Thank you for the quick reply.
I'll try to explain my purposes:
1. I've created a menu item that when the user click on it he can create only one article.
These were the steps that I've already done:
1.1. Construction > Forms & Content Types
1.2. Article
1.3. Permissions
1.4. Registered
1.5. Create > Certified
1.6. Create (Max. / Author) > 1
2. The next important step for me is to create another menu item that when the user click on it he will be able to edit the same article he has created. What are the steps that I should do in order to succeed in doing that ?
Thank you Mehdi.