Getting Started

First things first, you need a Provisional License.

Apply:    https://www.gov.uk/apply-first-provisional-driving-licence
When:   Earliest - 2 months before your 17th birthday
Price:    £34 online (correct as of 09/10/2017)
Time scale: approx 2 weeks to come through

KEEP IT SAFE - you need it!

Studying for the Theory Test can be done as early as you like.

Some essential reading:
The latest Highway Code, find it in most supermarkets or WHSmith, £2.99 approx.
The Official DSA Guide To Driving - The Essential Skills book, £12 approx.
Driving Test Success CD - great for mock tests and Hazard Perception videos, £5-10 approx, look on Amazon, ebay, etc.