Hi,
I'm learning RoR, been throught various tutorials on scaffolding, done 
the O'Reilly "Ruby on Rails" book by Tate and Hibbs.

I'm planning to build a full web application with logins and sessions.
Can you point me to a tutorial to help me design the architecture:
- components (how to login, manage users data...)
- best practice to manage sessions , global design.

Thanks,
-- 
Fjordur