Most jobs are filled without the employer ever posting an advertisement. So you can’t just pick up the classified section of the newspaper and hope to advance your career.
You need to network. But while you call or email old friends and colleagues, two websites in particular offer very extensive postings of open positions: New York Job Bank, a division of Job Central National Labor Exchange; and Indeed.com.
If you have a specialized field – or have a particular goal - you might find some help here: