how to frame my Club?

books business civil association virtual lack

I'm about to launch these days BOOK CLUB. (I've filed with the Registrar-Marks) .- This is a system by which the reader pays a small annual fee (70 pesos arg) and internet hanging USED 10 titles of books in his library. (And leave them at home). All who register do the same, and then, through internet llibres are exchanged throughout Argentina, totally free, only the sender pays the postage (5-8 dollars).
We do not know how to frame for the accounting, tax agency, municipal, etc. I could tell where I find the answer, because my counter is not known to go out? I have to do before starting, I must wait a reasonable time?. Thanks. Send me reply to my mail? Do not know how this works!
KISSES AND THANKS