6) "If I make up my own stories, but base them on another work,
my new work belongs to me."
False. U.S. Copyright law is quite explicit that the making of what are
called "derivative works" -- works based or derived from another copyrighted
work -- is the exclusive province of the owner of the original work.
This is true even though the making of these new works is a highly
creative process. If you write a story using settings or characters
from somebody else's work, you need that author's permission.