Check out this great BNET feature on dressing for work. It is broken down into four subsections that cover the basics of business dress, 10 easy ways to upgrade your look, how to buy a custom-made suit, a short video on dressing for business success.
As a sidebar, the section on ordering a custom-made suit was penned by Christian Chensvold, founder of the blogs Dadyism and Ivy Style. Therefore, you can rest assured that it is both entertaining and highly informative.