As an Examiner, I would advise that you tackle Human Performance and Limitations first, then Air Law and Operational Procedures and Communications - PPL (Theory) before going solo. Then do Meteorology, Flight Performance and Planning and Navigation and Radio Aids before planning your first navigation exercise - things will then make more sense to you. Do your RT Practical before your 150nm navigation exercise - you should have had plenty of practice by then and it'll give a lot of confidence. Finish off with the fairly easy Aircraft General and Principles of Flight just before the PPL Skill Test as the oral questions from your Examiner will then be much easier to answer! Conduct your self-study using the text books and their end-of-chapter questions as hasd been recommended and then use the 'PPL Confuser' (if you must) only for revision. You will not pass if you just question-spot from the PPL Confuser!
Good luck!!
[ 07 October 2001: Message edited by: BEagle ]