design and implementation ?

[greggory]

Hello,

I'd like to get an understanding of the inner architecture of 
DragonFlyBSD (i'm a kernel newbie, sort of).
Is reading "Design and Implementation of FreeBSD system" worth it, 
considering it is based on FBSD 5, and DFly derives from v 4 ?
Or should I go with the previous "Design and Implementation of 4.4" ?

Problem is to make relationships between classical, former orientations 
and actual implementation of DFLy...
(Reading the source code without orientation seems daunting...)

Or any other pointers ?

thx,
++