Stepping through ghc

Hi, I'm new to ghc codebase and I'm interested in stepping through the code in order to gain a better idea of how it all works. - Is there a way to load ghc into ghci ? and debug through it ? - What are the ways experienced ghc devs step through the code ? - Any techniques you guys recommend ? - What would your advices be for a newbie to the source code ? Thanks, Omar Mefire,