Apps and legal rules

By JeffSkyrunner, in X-Wing Off-Topic

Hi everybody!

I have a curiosity regarding developing apps for FFG's products and, in particular, I would like to know which are the legal restrinctions about them.
Is it possible to sell them if I specify they are not linked to FFG?
If I give them for free, am I allowed to use ads and banner to earn something?

Where I can find all the related informations about making fan products?

Many thanks in advance

J.

Thanks!