Double Bass A Bille Question

[jacofleawooten]

How many books are there? I currently have what I believe to be the "second book". I say believe because it says "parte II" but it has something below it that says "IV corso normale"; which is it?

 

[Subscript]

There should be a number on the bottom left of the cover, which is how most people distinguish between the Bille books. I think that's 303, which covers thumb position.

There's 8 books that I'm aware of

 

[BoogieNight]

You have book number 4.

Books 1-3 belong to "PARTE I" , books 4-7 belong to "PARTE II".

(At least I remember it being that way)