Posts: 75
Threads: 5
Joined: Jan 1970
You *will* need a manual if you are going to do more than skim the surface of its capabilities. Aside from the sheer number of functions and modes that it has (I've lost count but there's more than 80 function) quite a few of the functions are infuriatingly idiosyncratic.
David has a scan of the Owner's Handbook on the museum CDs. A trip to Kinkos with the PDF file any you'll have a spiral-bound manual for substantially less than you'll get a collectable manual from eBay.
If you want to play with some programs I have a handful of listings on the HP-16C site. Have a look on the "calculator" page.
Cameron