I have been looking for some resources on the Internet (including AOPA's
member section) for some basics on airframe construction. In my studying
to become a pilot, I have come across references to spars, bulkheads,
and other A&P terminology that I don't have an understanding for. Can
anyone point me in the right direction? I could probably purchase an A&P
book, but I'd like to avoid that expense if possible. Thanks.

--
Mike