I want to learn about Buddhism...

Here is a sort of one stop shop, so to speak

There are many wonderful books out there but for those just starting out I recommend:

The Essence of Buddhism

Open Heart, Clear Mind

The heart of the Buddhas teaching by thich nhat hanh

Tik · N'yat · Hawn
(from his website)

I've been reading The Idiot's Guide to Buddhism Third Edition. I think it's great and definitely would recommend it. 

http://idiotsguides.com/static/quickguides/religionspirituality/what_is_buddhism_the_basic_principles_explained.html

and of course there is 

http://www.buddhanet.net/e-learning/5minbud.htm

and you could read some here

http://www.religioustolerance.org/buddhism.htm

You can google "Buddhism" on Abebooks.com. They are really cheap for used books (sometimes as low as one dollar)

Good luck!