Writing a compiler.

Hi, I'm currently on a placement year at University studying computer games programming. When I go back I will be writing a compiler.

I'm trying to be as prepared as I can be before returning to university.

Can anyone give me tips, a good place to start or any advice for starting?

I imagine that I'll be writing the compiler in C.

I'll be writing the compiler in C.
Poor guy. Take it easy and use s-expr syntax.