Not all versions seem to be available in that format, I'm not sure why I think it's just an Autodesk thing.
You can find 2013 user guide as a PDF with clickable shortcuts.
To be honest that 2010 guide will be valid for almost everything you want to do in 2013 (or even later versions).
It just depends on which guide format you prefer.
And of course google will give links to many guides and tutorials.
PS. Did the Flatten command do what you needed?
Im intelligent enough to know that I dont know everything; but I'll tell you all about it anyway.