Preparing for an interview requires a lot of time and patience. It is not something that can be crammed into the ten minutes you have before leaving to meet with the recruiter. Luckily, it is also something that becomes easier with time. You begin to know which questions to expect and can decide which answers work best and which fall short of perfect. The more interviews you participate in, the closer you are to winning that perfect job.
One of the most time-consuming parts of the entire job interview process is researching a prospective employer. However, it is also the most important part of the process. The easiest way to set yourself apart from the rest of the candidates is to leave the interviewer with a positive impression. And the easiest way to do that is to know the company inside and out. Remember, this is not something you should do early in the job search game. Wait till you've been offered an interview before researching the company in depth.
While you should be prepared to field calls from recruiters after sending out your resume, don't waste time waiting by the phone or watching your e-mail inbox. In preparation for screenings, however, keep pen and paper handy with a list of companies you've sent your resume to, the positions they were hiring for, and some company background. This will help you respond quickly and appropriately when responses come in.