Changing the Document to 12pt

Here is the process. The ---> symbol shows what line you changed.

---> \documentstyle[12pt]{article}
\begin{document}
Well, in OUR country,'' said Alice, still panting
a little, you'd generally get to somewhere else -- if
you ran very fast for a long time, as
we've been doing.''

A slow sort of country!'' said the Queen.
Now, HERE, you see, it takes all the
running YOU can do, to keep in the same
place.  If you want to get somewhere else,
you must run at least twice as fast as that!''
\end{document}