Green card process

Hi,
I just received an invitaion to do the fingerprints for next month. Can someone tell me what are the next steps in the process to obtain the green card, and estimate on the time this will take?
I live in NJ and using Vermont center.
Thanks,

Maybe RFE or Approval.FP is last stage.

http://www.kamya.com/interview/intro.html

This site should answer your questions on the process of applying for your Green Card.

Good Luck!