how we use the crystals>?
 

how we use the blue crystals?

You need them to learn spells from scrolls or upgrade spells when you have the appropriate skill, e.g. If you want level 2 teleport, you'll need level 2 distortion magic.

and to upgrade those spells to a bigger lvl ;)

i have 77 blue crystals now how i use them?
I dont get it?
Or it does by itself?

how?

Click the arrow next to the spell.

Before you can learn a spell (by spending crystals) you need to have the appropriate skill - Chaos, Order or Distortion magic! And if you want to upgrade the spell to a higher level, you need to have the given skill at a higher level too.

Open your spell book tab... scrolls and spells will have an icon you can click on by the right side of their picture which allows you to either learn a spell (if its only a scroll)... or increase its level if you have already learned the spell and have the appropriate skills.

All spells have 3 level... and you need the corresponding magic skill to learn a spell.

So to learn fireball 1... you need destruction magic 1 and a scroll of fireball, to learn resurrection 2, you need to have already learned resurrection 1 and have order magic 2.

I hope that helps, as I don't think I can explain it with words with any more depth.