I Found a brilliant guide on using LinkedIn to market yourself, find a job, and build and maintain a lasting professional network which was prepared and published by Stanford's Career Development Center, University of Stanford. It nicely discribe the way to use the magnificent potential of it as they are being the #1 professional network in the world. Linkedin helps you to occupied with traditional tools of job seeking such as CV, Covering letters, recommendations and business cards while also providing you latest tools to build your profile and image within a target industry and turn relationship a carrier opportunity. It emphasis the important of being updated with profile, stay touch with interested companies, participating groups, follow relevant professionals in order enhance your carrier. More information you will find on following presentation which they have published in PDF format.
You can downloaded it using this link http://studentaffairs.stanford.edu/sites/default/files/cdc/files/LinkedInWeb.pdf
Following are recommended links if you wish to use Linkedin as your way of marketing your profession
Career Exploration Tools