<p>I advise you to have a look on the Trip Advisor UK forum for more detailed answers to your questions, but here is the answer in outline.</p>
<p>The Tube aka the underground (NOT the Subway. That’s a pedestrian walkway underground, or a shop selling sandwiches) only operates in london. There are also overground stations in london, and many of these have an underground station as well. You can easily identify such stations on the underground map linked below. Tube stations with links to overground have alittle red “crows feet” British rail symbol next to them.</p>
<p><a href=“http://www.london-tube-map.co.uk/london-tube-map/tube-map.jpg[/url]”>http://www.london-tube-map.co.uk/london-tube-map/tube-map.jpg</a></p>
<p>travelling from S-U-A and London will be by an above ground normal train. Sometimes cheap fares can be bought in advance online. Often this will be “off peak” travel times only. Which means weekends or after 10am weekdays. </p>
<p>There are lots of trains companies but it doesn’t matter which company you buy your tickets from. they all sell each others tickets. In most cases only one company runs any one route. So don’t worry if you buy from Southern and your train when it comes is Virgin. That’s normal. Some of the train websites do not accept overseas credict cards, but I know east coast does.</p>
<p>[Cheapest</a> Train Tickets for the East Coast > East Coast](<a href=“http://www.eastcoast.co.uk/]Cheapest”>http://www.eastcoast.co.uk/)</p>
<p>On the tube you can buy single journey tickets which cost about £4. Do not do this! This is twice as much as you need to pay.</p>
<p>There are two ways you can save money pay-as-you-go (PAYG) or a travel card. </p>
<p>To use PAYG you go to an underground (NOT overground) station and purchase for £3 a little credit card called an oyster card (when you leave London, have the card in to get this £3 and any remaining money on the oyster back). You can then put money on the card. When you go on the tube you swipe the oyster and the gate opens. swipe again when you exit the tube, and it charges you the lowest price for the journey. £2 instead of £4 for a single zone 1 journey (the tube is divided into zones. Heathrow airport is in the furthest zone, zone 6, and is the most expessive to travel to. Nearly all tourist attractions are in zone 1).</p>
<p>The alternative is to buy a travel card. this allows all travel for 1 day in the specified zones for a fixed price. eg zones 1-2 costs about £5 (personally I’ve got an oyster so I don’t know). You do not say if you are staying in London or in S-U-A. If travelling from S-U-A, you might be able to get a train ticket (over ground) and travel card all in one ticket. These tickets are paper things which you slot into the tube gates and they pop out. Remove ticket and the gates open (this is obvious once you’ve been on the tube once). Alternatively, if it also possible to have a travel card “loaded” onto an oyster for the same price. Then use the oyster as above. If you go outside the zones listed on the travel card, you will need to pay more. this is why PAYG oyster is good. it’s smart and will charge you for a zone 1-2 travel card if you only travel in zones 1-2, and just add the extra cost of travle outside these zones if necessary.</p>
<p>If you are staying in london for 9-10 weeks, I recommend getting weekly travel cards loaded on oyster, and put a little bit of PAYG cash onto it too in case you travel outside thecentral zones. </p>
<p>If you are staying in S-U-A, I would buy an overground train ticket to marylebone with a zones 1-2 travel card included for the day (the people at the station they will know what this means). The it doesn’t matter if you go wrong on the tube. You can have as many travle card journeys in zones1-2 as you like. If you find significant savings online for the overground trainfare, buy these tickets online then on arrival in Marylebone buy a tube travel card (on oyster or paper as you prefer).</p>
<p>NB travel cards/oyster work on the buses and river taxis things too, but not the open top tour bus or guided river cruises.</p>
<p>Finally, for a student making lots of rail journeys, you can save money by buying a young persons rail card</p>
<p>[16-25</a> Railcard - Make Epic Savings on rail fares](<a href=“http://www.16-25railcard.co.uk%5D16-25”>http://www.16-25railcard.co.uk)</p>
<p>only works for overground trains as far as I know.</p>
<p>There is also megatrain (google it) who offer £1 fares but on a very restricted service.</p>
<p>Hope this helps. Maybe not. The tube is hard to explain but easy once you have used it once. Try tripadvisor!</p>