Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

Hello,
sowwy for noob question. But as new player. Still trying learn some tricks, things etc. But what I miss is skills usage. I have some spells etc. But when I use them once or 3 times I cannot use them anymore, until next my game session.
I miss something, or doing completly wrong.
I'm playing bard, do not know if that have something with that.

Thanks for answers !

try to rest.

The "R" key is the default shortcut for resting! It should refresh your HP and your use-per-day abilities like spells and bard songs.

You can't rest while enemies are near, and in some maps where it's too dangerous to camp.