Question:: Can I get any help with British Computer Society Exams:

Hello World,
I m hoping to do this exam in 2017 and due to downfall a of my economy(common problem living in 3rd world) I can't afford for any classes. I m doing the certificate level and need some help.
Subjects are:
Information Systems
Software Development
Computer and Network Technology

;

Or in general I need an idea about where should I start to learn computing .