Mysql newbie question

I have 3 tables
TABLE #1 "users"
3 columns
User-ID int (11)
Location varchar (250)
Age int (11)
Primary-key (User-ID)
TABLE #2 "books"
5 columns
ISBN varchar (13)
Book-title varchar(255)
Book-author varchar (255)
Year-of-publication int(10)
Publisher varchar […]

See original post by invalid@example.com (Rosemaeyg)