Attached Link: http://www.luminous-landscape.com/tutorials/understanding-series/understanding-histograms.shtml

Hi Jonathan! Welcome to the forum indeed!! I do don't landscapes at all since I suck at it but, as a general advice, I would suggest u learn to use ur cam in manual mode! Learn about exposure!! The day I swapped to manual, I made huge progress in my photography! Best thing is to try different settings and then U'll get an eye for it! ;) Also, use ur histogram if u've got one! Here's a link u might find interesting! Hope this help a 'lil!