Joe McNally is an awesome photographer and author of the Hot Shoe Diaries. He specializes in speedlight (flash) photography. Check out his blog for some interesting anecdotes.
One of the rudimentary composition techniques is the Rule of Thirds. This is where the points of interest in a photograph are located either on the vertical or horizontal (imaginary) lines dividing the picture into nine squares of equal size. Read more about the Rule of Thirds in Wikipedia.
Here’s some great tips on Potraiture photography.
Great Photo Tips
One of our favourite resources for photography tips is ths wonderful blog from photographer Scott Bourne. Check his blog out at PhotoFocus.