See Switzerland via the world's best transport system!
http://www.swisspasses.com/railpass
At first glance the name of the site doesn't seem to have much to do with travel but this site is a must if you are interested in train travel. I would say there is no need to go any further as the site contains all the information you will ever need with
http://www.seat61.com/index.html
National Rail Enquiries are the official information service for National Rail (the collection of train companies who operate Britain's rail service). The site provides up to the minute advice on journey planning and train service updates.
The purpose of the site is to help plan journeys and buy train tickets to anywhere in the UK. The unique journey planning software ensures that only fares that are available for the required journey are sold.
Transport for London is the integrated body responsible for the Capital's transport system. This excellent web site has details of buses, the Underground, the Docklands Light Railway, the Croydon Tramlink and London River Services.