What do I need for an electric Lego train track?

[rubyhorse]

Hello. DH would like to get DS the beginnings of a Lego train track this year - an electric one. Could anyone more knowledgeable than me suggest which sets would be required? Need a train, tracks, possibly station - and then is there any extra electric gubbins to get? Can divvy it up around the extended family :).

[needanswers]

You can get starter sets - I have my oldest DCs waiting to be handed down