Features:
Insurance Exchange 101: What you need to know (NPR)
What you need to know (WSJ, news you can use)
Those who could benefit are largely ignorant of the law according to the Philadelphia Inquirer (Man on the street feature)
Opinion Piece:
'Affordable Care' or a Rip-off? (NYTimes)
Polls:
Obamacare vs. Affordable Care Act (CNN)
Websites cited by these articles:
Information from the Dept. of Health and Human Services
Information about the Exchange Program (healthcare.gov)