There are two basic ways to change font sizes in Latex:

- To change the basic font size used all the way through your paper, put either
  "11pt" or "12pt" in your \documentclass line.  For example, if you had:

	\documentclass{report}

  but you wanted to use 12pt type (10pt is the default), you would change it
  to:

	\documentclass[12pt]{report}

NOTE:  12pt is an option to the "report" class, not a separate
package, so doing
	\documentclass{report}
	\usepackage{12pt}
will *not* work.   

- To change just a part of your paper into a different font size, you can use
  some of the sizing environments.  In increasing size, they are:

	\tiny
	\scriptsize
	\footnotesize
	\small
	\normalsize
	\large
	\Large
	\LARGE
	\huge
	\Huge

  The case is important in these commands.  Also, in some document styles,
  some of these commands may produce the same size font.  For example, if you
  wanted to just make a small part of your text in a different font, you would
  use something like:

	This is in normal text, while these words are in {\large large text}.

  Or, if you wanted to put a larger region in a different size, you'd use
  something like:

	\begin{small}
	this will all be in small text
	this too.
	etc..
	\end{small}