Setting up your development environment

[Mason Silber]

I recommend you do these things before the course starts, but it's not
100% necessary.

XCode 4 + all SDKs and APIs (installed automatically) ends up being
about 10 GB, and the disk image itself is about 4.5 GB (which you can
delete after you install it). Make sure you have enough space for it
before installing it!

One more thing: Columbia throttles bandwidth if you download more than
2 GB in one hour, unless you do this downloading between 12 AM and 10
AM. I suggest that. You won't get fast internet back for a couple
hours otherwise.

Things you'll need:
Intel Based Mac (To check, click the Apple icon in your finder
toolbar, and go to "About This Mac". If your processor has the word
"Intel" in it, then you're good)
Snow Leopard or Lion (Mac OS X 10.6 or 10.7)

To download XCode 4:

If you have OS X Lion, go to the App Store->Top Charts. XCode should
be one of the top free downloads.

If you have Snow Leopard, it's going to be a little trickier. I don't
want you guys to download XCode 3.2, because XCode 4 is so different.
So what will happen is that I'll bring a few thumb drives with me,
each of which will have a disk image of XCode 4.1 for Snow Leopard on
it. Copy the thumb drive to your desktop, and install from there.