Yes -- "Import" previously-used items.
Yes -- you can bring in a personal copy by ticking off the appropriate box...
...or you can request it as a purchase, in which case the Reserves Specialist will pass your request on to the librarian responsible for that collection area.
Just click on "Course Home" and the titles on reserve will be listed.
Generally, it takes about three days to complete requests. Once your items are activated, you will receive an email. You can also click "View Item" to track its status.