For information on tracking, you can find SOPA on this page, and PIPA on this one.
SOPA is currently in committee, which means it could still be tabled and killed for good, or could pass. PIPA has just passed committee, and is up for vote in the Senate on January 24.
Help kill these bills. Email your senators, look up their contact information on senate.gov.
Take another step, and email your representatives,look up their contact information on writerep.house.gov.
The emails I've sent have gone something like this:
I'm writing to you about SOPA and PIPA.
As a student, I'm an avid consumer and user of the Internet, and I oppose the Stop Online Piracy Act and Protect Intellectual Property Act in their current forms. I know it's important to protect copyrighted material online, but these bills are flawed.
Congress should focus not just on the goal of protecting copyright owners, but also on protecting the speech rights of consumers, like me, who are reading and producing wholly non-infringing content.
Please set aside these bills in their entirety or reformulate them to protect my rights.
Thank you for your time.
By the way, if you're in Connecticut, like me, both of your senators are currently sponsoring PIPA. Go do something to change that.