The
X3 review at mini-lathe.com is a good place to visit.
It covers the mill, accessories, setup, features, mods and more.
He has some suggestions for tooling and such as well.
Tons of good info.
Little Machine Shop has a
getting started guide for the minimill but many of the tools
are perfectly suited for the X3 as well.
Plenty of R8 suggestions.
I have links to the
MIT training videos that could give you some tips and
a link to the
Machinists Handbook.
That should keep you busy while you wait for delivery.

Hoss