Here is a brief explanation of whats entailed in the twelve driving lessons: the latest rules introduced by the RSA.
Brief outline of how 12 lessons should be carried out:
As of the 4th 2011, all new learner permit holders will have to do 12 lessons before they can sit their driving test, Lessons 1 to 8 must be taken in order of the syllabus. Lessons 9 to 12 can be taken in any order.
The RSA recommend you leave two weeks between lessons to allow for practice and learning.
This may involve further lessons with an ADI Instructor but must also include practice sessions with a sponsor or a mixture of both.
Reference:
The Road Safety Authority publishes reference materials such as Rules if the Road and the Car Learner Manual, which you may find useful.
Spread lessons of 6 months:
To combine practice, study and instruction the RSA recommend that you should take at least six months to complete the 12 EDT lessons.