Welcome, Luigi,
You write:
2) Torben Brosten suggests that maybe it is not so easy...
My clarification does not apply to beginning administrators or developers, such as yourself. I meant to clarify that: this testing is not for end-users. The role-objectives of end-users are very different from beginning and experienced OpenACS administrators and developers.
Lack of experience can be an asset when testing a system for completeness. Both testers and the OpenACS system can benefit from the testing experience. Where else can you try things you are unsure of; be certain to get useful, immediate, feedback; and immediately contribute to the project?
ciao,