I am being really thick here and struggling to get started. Once I get going I'll be on my way, but at the moment I can't spot an obvious route in to get some momentum (and motivation) going.
How do I test a user without changing DNS about? Do I need to use an alternate domain (I have one to hand anyway) or can I use the .sch.uk address? The staged migration document seems to say that email gets forwarded on from Exchange for now. Presumably then when I've moved everyone over, I update the DNS, and cut the Exchange box out of the picture?
Do I need to create the user account on Office 365 before the staged migration or is this done by DirSync? How do I configure Outlook to point to 365 for the email - is there a *.prf file or do I have to configure autodiscover on my internal DNS?
/feeling very stupid in the heat
I have Outlook Anywhere set up anyway, which is something at least!
Also - DirSync - does it want installing on a DC?
Documentations advises it not to be installed on a DC.
Prepare for directory synchronization
I'm also looking to do the same as you and keep getting lost as I don't want to break my existing exchange.