\markboth{leftTEXT}{rightTEXT}.
Then, odd page headers will display rightTEXT while even page
headers will display leftTEXT together with the page number.
The command \head{headTEXT} will put the string headTEXT
on the header of the title page.
Inserting the commands \thispagestyle{empty} and
\pagestyle{empty}
just after the \maketitle command removes any text from the
headers, leaving them empty.