So what I just noticed is:
I had almost enough EP for level 5 Alchemy, then I decided to read a book about it
So I did and went to level 5, but my EP were reset.
In my Opinion it would be better when the previous earned EP will not get reset when you read a book otherwise it would only make sense to read a book when you have 0 EP on the level you are at.
Is this how its supposed to be? what do you think?