The more information you have, the better decisions you can make. It just so happens that you can find the most information online. Internet guides like AltaVista and Yahoo will link you to dozens of sites for job seekers. The Experience Network even offers research on what it's like to work in 20 different industries and at particular companies. It's a good place to get company contact information, too.
Many companies provide recruiting information on their websites.
A lot of this material sounds like a hard-core PR pitch, but it can at least give you an idea of what a company does so that you can determine if it's a good match for you interests. Don't forget about professional organizations. These are excellent sources of industry news, and many sites also have job postings. A lot of this material sounds like a hard-core PR pitch, but it can at least give you an idea of what a company does. A job bank usually lets you search its database of job classifieds by profession, job title, location and level of experience.