Required Knowledge
Nowadays the entry barrier for robotics is not high. To start building some simple robots it is sufficient to know the very basic electricity principles, have the preliminary idea about how to use a computer, how to browse the Internet and work with documents.You won't even need any soldering skills!
Still - any kind of extra knowledge will be extremely helpful for you. If you are keen to take your robotics hobby seriously but feel the lack of the core knowledge - consider participating in the basic online training like this one: Khan Academy: Electrical Engineering. The foundation Programming training can also be helpful.
