I've found this aritcle on designing flower beds in your backyard and found it really useful. Its an article on the basics of creating a flower bed but it has quite a few simple and useful ideas that I think can help the beginners out there. Have a look at it and I hope you enjoy it as much as I did.
"This guide will show you how to design and create a magnificent flower bed to enhance the color and aesthetics of your backyard, turning it into a paradise for you to enjoy."
Via Debra Anchors