The second item listed is "Eclipse IDE for Java Developers (92 MB)." Click that.
Click on the green, downward pointing arrow. A download of eclipse-java-galileo-win32.zip will start. Save the file to a convenient location, like your Desktop.
Of course, the workspace name will have your user name in place of "N. Zheng." You can choose whatever place you want for your workspace, but it's easiest to just use the default you're given. I recommend that you just click the checkbox next to "Use this as the default and do not ask again" and then click "OK."
Click on the folded-over arrow on the right. You'll see the tooltip on the above screen when you move the mouse over the arrow. You won't see this screen again, even if you quit Eclipse and relaunch it.
Lots of buttons and panes, but nothing of consequence.
As you can see, there's some text following "Java Editor Text Font." Don't worry about it.
On the right, where you can select the size, click "12." Then close this window by clicking on the window's close button.
You can type in any profile name you like. I used "CS 5":
Then click "OK."
Change the tab size to 2:
You'll see that the Indentation size automatically changes as well.
Click "OK."
Close the color picker window by clicking "OK", and click "OK" again to close the Preferences window.
You'll get something like this:
And you're done!