1) Buy the back pack of the hearty that gives you +5 hps.
2) buy a sling. Mace is optional. Most low level gear is sold out side the gates in a field near the grave yard.
3) Kill undead in the grave yard till level 2 or 2 1/2. Up to 3 if you have the stomach for it
.4) then do all the city quests. Make sure you even get the ones to high level to do now as you never know if your find a helpful person that can get you places.
5) this should put you close to or at level 4. Ideally your want a party and travel to the Ruins just on the other side of Wyrms crossing bridge. Stay on the first level for now. If you can't find a group try it out and go slowly, AC is your friend if alone at this point.
6) You can stick there till 5ish to go deeper with a group, or 6 if alone to see levels 2 and 3. All depends on AC and other factors. Look out as level 2 in the ruins have magic missiles firing Imps that can hurt after awhile.
7) After that stick around there or head other places at that point, and explore as you see fit. Plus don't forget running is always an option if you find your self over your head. Even more so when no one is around to see it lol.
8) As you know in all games finding a group helps a ton, and BG players are very nice and helpful.
9) Above all have fun!
10) Also as well, above all have fun!!!
My log on is Keldri. I'll do my best to help out with what ever I can, I like helping folk.
PS: I know nothing about the Underdark here... but I know some people who do
