Not mentioned yet, but start your CV by deciphering the job advert. Every phrase is a clue to what they are looking for, so make sure that you have a strong example for every requirement.
This approach will result in a customised CV targeted precisely at one job. It really is worth the effort.
There's an argument that the CV should not be re-written each time a job-ad appears. The covering letter is the document to answer the questions posed by the advertisement- while the CV is a more generic brochure. If your CV finds it way into an organisation, a finely tuned version might be rejected as being too specialised, but a more generalised version may well be picked up and read through/handed around as being interesting, perhaps for a vacancy you did not know existed.
Which brings me on to marketing yourself. While it won't be possible to cover all companies/organisations, a full-time job hunter should be highly pro-active and be searching through places before the advertisement gets placed. It's a legal requirement to advertise internally, and government has to advertise externally for some posts, but companies don't have to advertise externally. Get in there before the ad gets placed.