[GRASS-user] Seeking book clues

[Chip Mefford]

Good day all;

Being the type of folk that really only effectively learn
by reading and doing, I'm trying to get a fix on these texts;

Open Source GIS: A GRASS GIS Approach
by Markus Neteler and Helena Mitasova
(Sep 21, 2004)

I know a new edition of this book is due, but I was wondering if
this book is current/topical enough to be useful?

Also, is anyone familiar with

Distributed Hydrologic Modeling Using GIS
by B.E. Vieux (Dec 20, 2004)

And whether or not this text actually has
Grass specific examples that are relevant
to a modern Grass system?

Doing hydro modeling is my primary interest.

All clues greatly appreciated.

--chipper