You need to find companies which have open requisitions for the kind of job you want. Here's where you need a telephone. The rest means work. Go to your library . Not only are most libraries rich in detailed texts about job hunting in general, they are great sources of information about specific companies.
Business directories exist for practically all categories of businesses.
They tell you type of business, location, number of employees, recent sales, key executives, products, and so forth. Make lists of companies which typically have the kind of job you want. You should be able to take down a couple of hundred prospective employer names and contacts at one sitting. Check out the World Wide Web . It is an infinite resource on jobs, companies, careers, and current openings.