Installing LaTeX Packages on a Mac
The installation process, if I remember it correctly, involved me downloading iInstaller and using it to install gwTeX, then downloading TeXShop, then downloading some package I can't find at the moment that came with both. Basically, I messed around with a lot of stuff not quite knowing what I was doing, it ended up working, and I don't really know how I did it. Which unfortunately means that I won't be so helpful guiding others through the installation procedure.
One thing that did puzzle me was where I should put the packages I
downloaded so that LaTeX would find them. For Mac users, LaTeX packages go in
the ~/Library/texmf directory. For me that directory looks like
this.
For those who may not speak Unix, this texmf folder is inside
the Library folder inside your home folder. That
latex folder inside the tex folder is where you
want to put the packages you want LaTeX to use. Technically, LaTeX should
find packages anywhere beneath the texmf, but it's recommended
that you put them in the latex folder. You will probably have to
create the tex and latex folders when you start.