There's a handy two volume set of manuals that no one should be without for sale on Ebay . Oops, looks like its gone but some of the more useful pages are posted at a well respected "medical site" that you can copy and keep near just in case.
I post one of them below so that in the event of an emergency you won't have to refer to this site or its links for immediate help. Everyone needs to be careful out there, dammit! I am more than a little curious about the discovery of a compass. I hope no one is loss in there.