New to Mac/OmniGraffle, Old to Win/Visio

Is there some cheat Sheet that one can use to help an old Visio user get up to speed?

For example, I used backgrounds in my Visio for Borders & Titles, and I can’t seem to find it in OmniGraffle.
For the one Visio I imported, it converted my border to a layer, and ignored the page specific info (i.e. name of page and title of document)