Hi Dave,
This aviation lark is very adictive, isn't it?
Anyway the first step is to complete your JAA PPL(A) and thereafter to actually enjoy the privilage of being able to take your friends and family flying.
Obtain the Night Qualification at the same time as your JAA PPL(A) (can be combined). If you did wish to add a JAA Multi Rating to your JAA PPL(A) then you require 70 of P1 time (NOT total time) before you can apply for the rating.
This will all count towards the 150 hours total flying time (including 100 hours minimum P1) that you required to start your commercial flying training - JAA CPL(A) - so use the flight time wisely.
During this time you can also study for your JAA ATPL Written Examinations, of which there are 14 subjects. These can be taken on a full time residential school basis (6 months) or via the distance learning method which takes approximately 12 months if you're going to be working at the same time. The distance learning aspect is not much different to that of the Open University.
Once you have passed all of those 14 JAA ATPL exams and you have the pre-requisite 150 hours (100 P1) flying time in you log book you can then train for the JAA CPL(A) skills test.
If you have not already done so obtain the JAA Multi Rating. This can be done at the same time as the JAA CPL(A) course. Around a 25 hour course.
Once this is over and done with you'll be then ready to do the JAA IR. A 50 hour course.
Once all of this is finished you'll end up with a JAA CPL/IR with ATPL Knowledge Exams Passed. This is otherwise known as a "Frozen" ATPL. It is "Frozen" because you have yet to obtain the 1500 hours total time including 500 hours multi crew for the full ATPL to be issued.
Don't worry you don't need a full ATPL to get a job... the JAA CPL/IR with ATPL Knowledge will do.
Another thing will be the MCC course that many employers will expect you to have done before employing you.
All the best.
Best wishes,
Charlie Zulu.