Here are some resources if you want to know more about the teaching of the Catholic Church:

1. http://www.catholic.com/
2. http://www.patrickmadrid.com/
3. http://www.papalencyclicals.net/
4. http://www.usccb.org/ (You can find an online Bible and the Catechism of the Catholic Church at this site.)
5. http://www.thereasonforourhope.org/