'It's the biggest job in London. You choose who gets it, ' run the huge advertisements cluttering up the capital's billboards and bus stops. It is the job of the metropolis' first directly elected mayor - and, with due apologies to the vast majority of readers living outside the circle of the M25 motorway - what an entertaining spectacle the London mayoral contest has become.

All the official information can be found at a one-off Biggest job in London website run by the Department of the Environment, Transport and the Regions.

Find out whether you're eligible to stand (almost anyone who has passed through the capital in the past 12 months appears to be) and what you'll have to stump up to do so -£10,000 and the signatures of 10 electors in each of 32 boroughs plus the City itself. The website even has ambitions to run a live results service on election day.

The mayor will, of course, have no direct say in the running of the NHS. But they will have a duty to work with it to promote the health of Londoners, and will have to take account of the effects of the Greater London Assembly's strategies on health.The mayor can even appoint health advisers.

The HSJ London's Health website - running in conjunction with a mayoral debate on the same theme on 6 April - offers information on the main candidates, a bullet-point guide to the relevant health issues and the chance to submit a question for our expert panel to ask the participating candidates on the day of the debate.

Of course, you may wish to go direct to the sources of all knowledge and wisdom on matters mayoral: the candidates themselves.

The Liberal Democrats' Susan Kramer, Labour's Frank Dobson, independent candidate Ken Livingstone, and the man who may benefit from Frank and Ken's little disagreement, Conservative Steven Norris, all have their own websites.

These and other sites of interest can be reached via HSJ's website at www.hsj.co.uk