I'm considering starting a few new beds for mostly ornamental plants around my front yard fence line; I simply don't have enough space to grow all the plants I want to try my hand at! The area is just grass right now. I've heard of smothering new beds with cardboard or newspaper, but I'm curious:
What are some of your favorite tips or methods for starting new beds?
Also, what are you favorite (and inexpensive) ways to outline your beds?