Reading dmd's source code

[jmh530 via Digitalmars-d-learn]

On Thursday, 20 August 2015 at 04:25:01 UTC, Freddy wrote:
> dmd's source code is very big, are there tips for reading 
> it(important files)?

Might make for a good http://wiki.dlang.org/ page, particularly 
after the transition to ddmd.