"Nothing to declare" - these same words i have heard in Brian Tracy's "Accelerated Learning Techniques". The audio program is incredibly effective, quite inspirational and very motivating. I've used it many times to get into shape for exams and it my grades showed enough improvement that the school gave me a scholarship. I might be an intelligent guy but i am lazy most of the time so i didn't keep using the techniques over and over. But when i have exams coming up i play the program and it does the job. It boosts my information retention rate and it makes learning enjoyable (i know...it's weird). the program is 79,95$...and although it's worth every penny my personal belief is that such knowledge should be free and taught in schools.

ps. i acquired it frugally: downloaded it off the net :D...like many other tools for education