Mark,
For more beginning stuff try: ISBN 0-13-032559-7 (Robert Bishop). This one has step-by-step tutorials which is good for starting off.
For More advanced stuff, try ISBN 0-07-913666-4 (Gary Johnson), also, there are a few others by Gary Johnson that will certainly suffice - just search for them.
Also, on the WWW - search for Labview + Tutorials.
Good luck with these, and keep searching for others, Doug