I have decided to start taking a computer systems tech course here in canada. I have always enjoyed working with computers and programming in the past, in high school especially. Where i have been out of high school for 3 years, and only recently decided to take this course, i was wondering if anyone had any good ideas as to preperation. I know I have forgotten quite a bit of things since high school. Does anyone know of any GOOD free sites where I can increase or improve my abilities in mathematics, programming theory etc? I have a good 3 months until i begin, and i would like to get a head start in learning things about c+ Java, VB. Any ideas or links would be appreciated.

Applicants are strongly recommended to having a fundamental working background in computer programming, through course work and/or industry experience. Examples of recommended programming platforms include Java, C/ C++C#, Visual Basic, Pascal, COBOL, or FORTRAN. Where would be the best place to learn as much as possible about these platforms? any advice?