I am about to start a facebook campaign but I have some doubts:

What is best to create a facebook profile?
Where do you go to choose photos?
Is it best to choose people that have their face hidden so as to avoid complains?
Is it necessary to create a convincing 'life story' for methods that involve creating groups to promote cpa or applications or this people don't check ones' profile?

Any thoughts? I searched to find an answer to these basic questions but didn't find any topic...