First, if you buy the arguments for giving to charity, you might want to research which charities aren't squandering their donations. Here's a link to lists of reputable charities, sorted by type of charity (such as hunger or international relief).
Next, check out The Hunger Site. You can donate food FOR FREE there! You can also donate rice for free by playing a word game at FreeRice. Links to other charitable organizations are at the bottom of this post.
The next two links will help those who can't find their Vice & Virtue textbook. This one's from Peter Singer, the same guy we read for class. It's his updated argument with some interesting specific proposals:

The next is the James Shikwati interview we read for class. (Shikwati's organization is online here. A similar organization you can donate to is online here.) The NPR program Fresh Air just aired a radio interview with someone who agrees with Shikwati's claim that most government aid to developing nations is doing more harm than good.
Here's an interesting article in which Nicholas Kristof discusses many of the concerns Shikwati raises about giving aid to African nations. I especially recommend reading the last section of the article.
Here's an article on all the reasons why we might give away the money we earn. This article even references Thomas Nagel's anti-I'M-SPECIAL-ism.
Next, here is Peter Singer's appearance on The Colbert Report. He's talking about our next topic: animal ethics.
Next, here's another short video of Peter Singer on giving to charity:
Finally, here are some cheaper charities designed for people who can't donate a lot of money: