London is one of the largest and busiest cities in the world, so you can imagine it could be quite easy to get lost.

So what is the fastest, cheapest and easiest way to navigate such a city? Travelling by underground of course!

Travelling by Underground, or the tube as it is also commonly known, is by far the cheapest and easiest way to travel in London.

When you travel by underground, you immediately eliminate the possibility of traffic jams and queues, taking the wrong turn and expensive taxi fares.

Travelling by underground allows you to visit anywhere you want within London and also provides links to Heathrow International Airport and national rail links at Kings Cross Station.

The tube has a total of 273 stations, all clearly marked with the very recognisable underground sign.

You are able to travel around London via the tube every day except Christmas day from about 5.30am. If you are travelling at night you should be sure to check when the last train leaves so as not to leave yourself stranded. It is also best not to travel alone at night on the tube as it can at times be unpleasant.

So where do you know where to go when travelling by underground? The tube maps are easy to read and are colour coded – each colour signifying one of the 11 lines.

When buying a ticket if you are likely to make more than two trips on the tube in a day the cheapest option is probably to buy a Travelcard. You can also purchase tickets by using automatic ticket machines which allow you to select your ticket type (adult, student etc) and the station you are travelling to. The cost is automatically displayed. Some machines will not automatically display the cost and so you need to know how much your trip will cost in advance.

While it can also be good fun, remember to keep a good hold on your personal belongings on the tube - just in case. You need to be aware of pick-pockets while travelling by london underground.

Phil Wiley is the author of the best selling book Mini Site Profits www.minisiteprofits.comand writes the free weekly Letter from Phil at www.ozemedia.com.