Hi
I am not sure I understand your question.
Do you want to know how OWA intergrates with IIS?
What type of information/tips/tricks do you require? OWA is quite a broad topic and information I give you might vary depend on your Exchange/AD topology
Give me a more details and I will be able to help or provide you with more information!.
Regards
Ben Hoffman
Microsoft MVP - Windows Server System Exchange