espn said:Understanding Exposure - Bryan Peterson
I think you need this book. Check out Riceball Photography bookshop @ The Adelphi 4th level.
Agreed. This was one of the first book I read (and re-read & re-read) ever since I started playing with my X700 in the early eighties.
If you really must insists, there's a link from another forum... not really on settings but make an interesting reading to get your Nikon D50 started (although that forum thread is on the D70/D70S):
http://www.nikonians.org/dcforum/DCForumID86/15189.html
Ultimately, it's all in your hands and your eyes. Nothing can replace actually BEING THERE AND DOING IT!
Enjoy your trip... and leave nothing to surprises.