I'm pressed for time myself, so I haven't taken the time to read them. 
However, I glanced at the first chapter, and decided they were worth keeping
on hand till I had a chance to read them.  So from a quick glance at
least, 
I would say go ahead and continue.

 -- 
Erik Schweitzer                    | Troll by birth, Yooper by choice.
Michigan Technological University  *
elschwei@mtu.edu   e-mail          | What's a Yooper?  Check out
(500)674-9903      phone           * http://rever.nmsu.edu/~yooper/