At some point in your freelance web career, you will need to design or have a website designed for you. If you are a bit into using programs like Dreamweaver and Photoshop, then you can more than likely get your own basic Website up and running without too much trouble.
There is a wealth of information and tutorials across the web teaching you how to design a website. One of the best tutorials that I have come across is from PSDTUTS. I have been following their blog for a little over a year now, and am so impressed by the quality and usefulness of their tutorials. I have followed and utilized many tips from some of their tutorials. The link to the particular tutorial on designing a simple layout is here.
