To apply for a provisional licence-

www.direct.gov.uk

To book a driving test-

www.direct.gov.uk/drivingtest

For queries about new licences and any other issues-

www.dft.gov.uk/dvla/

For information on driving in GB with a foreign licence-

www.direct.gov.uk/en/Motoring/DriverLicensing/DrivingInGbOnAForeignLicence/index

Lots of great information-

www.driving-test-success.com