The way to get a PPL most cost effectively (apart from doing a JAA PPL in California in about 6 weeks; let's not start that one again
) is to find a pilot friend/mentor who lets you fly with him/her and who shows you the ropes, including all the ground stuff like flight planning. Then, you will know everything practical before even starting the course, will finish in the minimum time (45hrs), and it will be easier all round because you won't spend the first 20 hours coping with a brain overload.
You won't be able to log any of that time but that doesn't matter.