Help a new guy out

[ube]

Hey guys, I am very new to this forum and I am somewhat new to photography. I picked up a Canon Rebel XT and went out to take some photos. I use aperture priority and shutter priority most of the time and sometimes I get a blue tint in my pictures but I fix it in iPhoto. I was wondering what settings I should apply to avoid the blue tint. Anyway here are two of my photos that I've taken.