Good Powershell book…
Just received a copy of a good Exchange 2007 and Powershell book:
‘Professional Windows PowerShell for Exchange Server 2007 Service Pack 1’ (Programmer to Programme) by Joezer Cookey-Gam (Author), Brendan Keane (Author), Jeffrey Rosen (Author), Jonathan Runyon (Author), Joel Stidley (Author)
Starts off pretty basic but does go into the structure of quite complex powershell scripts. ..definitely worth a read.