Akar,
The site that Eric gave you a link to is a good one; but shop around a little, since I have yet to see a walkthrough that gives you all the ways to get quest XP. (I noticed two [2] extremely easy ways to get several thousand XP in the Prologue that are not mentioned in the link Eric posted.)
Go to
www.google.com and select the "advanced search" page. Then search for pages that have
all the words walkthrough; *and*
the exact phrase icewind dale. Shouldn't be too long before you're swimming in walkthroughs. If you want even more, stay in Google's advanced search and go for pages that have
all the words icewind dale; *and*
the exact phrase walk through. It worked for me...
Hope that helps.