Germany currently gets it either from sign-in (Kakashi for this month), or you exchange ninja frags for them.

I've kinda gotten the impression though that every version is going to have that at start, and that the other stuff like books from treasure, or refresh 'skill breaks' that china has etc, is all going to come later as further additions.

It depends on the books color. Green is 50 frag, blue 100, purple 150. I haven't seen higher colors yet but if they exist I'd assume its gold/yellow 200 and red 250.

If we get same starting ninjas as germany for it, there's gonna be normal naruto/sasuke/sakura, normal kakashi, hashirama and tobirama. Sasuke I don't think has all his book'able skills yet, naruto/sakura do, kakashi not sure about but I think he does. No idea of the hashi-/tobirama.