There are two trustworthy tools for adjusting the dimensions and position of the
printed material on the page are
geometry and the
zwpagelayout packages; a very
wide range of adjustments of the layout may be relatively
straightforwardly programmed with either, and package documentation is good and
comprehensive.
As is usual, users of the
memoir class have built-in
facilities for this task, and users of the
KOMA-script classes
are recommended to use an alternative package,
typearea. In
either case it is difficult to argue that users should go for
geometry: both alternatives are good.
The documentation both of
geometry and of
zwpagelayout is rather overwhelming, and
learning all of of either package’s capabilities is likely to be more
than you ever need.
The
vmargin package is somewhat simpler to use: it has a
canned set of paper sizes (a superset of that provided in LaTeX2e),
provision for custom paper, margin adjustments and provision for
two-sided printing.
This is FAQ version 3.27, released on 2013-06-07.