Can I get my save from the old version to the new version or is impossible?
You still can play most of it, albeit there might be some bug still linger in the safe files. The good choice is to start a new save, but it's okay if you want to try it.
Alr, thx. Is there any other way to get more magical stone than killing wizard/mage and chest?
Magical stone? Did you mean magic water? The one who replenish mana? You should be able to buy it in the village's shop.
LIke the one get new magic spell
Ah, the tome. Yes, the only way to get it is by gaining it from chests or defeating wizard.