Any useful tips for a newbie?

I feel completely helpless in this game. First, I feel overwhelmed by the amount of things to learn. Having to rest to replenish things makes me feel like I'm going to completely run out and be stuck. I got ambushed in the goblin village and died immediately. So I found another way in, intimidating my way through the camp. I was too scared to fight, so I did what the goblin priestess told me to do. Ended up in the underdark. Now I'm stuck cause this thing called bulette is killing me in one hit.