I want to make just one master script for several special skill books.

Is there a way for the script on activation of the book to know which book the player activated at that moment?

wait wait wait... I think I know how to do this. I forgot that the SAME script can still be assigned DIFFERENT property values variables!

I will just assign a book variable to itself and then the script will know what book is being read!

But I am glad there is a way to get this done!

What about

Event OnActivate(ObjectReference akActionRef)
    Book thisBook = GetBaseObject() as Book ;book object may be SKSE only?
endEvent