Work book?

I am not good at repair the scooter myself
I want learn DIY and need some technical book
Anyone provide me some good book(english)
I am a beginner at fixing scooter
My scooter is PX150E
I hope by the way I can separate the scooter and assemble by myself
Or there is some other good way to learn this?

In SIP shop there is a book that covers all P range Vespas, the cover is red, I cant remember the name, but editorial is Haynes, and its in english.
This book covers all possible troubles that can be appear, electrical, engine, etc… Overhaulling the engine and all other parts.

I hope that`s usefull to you!

See you[:D]