(Correcting someone 'matter of factually')

I didn’t just decide. I was tired of that place. Not to mention I had no idea of where my tribe was. Besides, he’d be dead if not for me.

(He's only offering to help because he has nothing else to do.)

I could teach you basics while we travel. I don’t have much skill but, I know the basics.

I’ve never seen a gemstone like this before.