This is terrible, a lot of us are waiting and dont even know if we'll get audited, to make things worst the DOL did not process any perm petitions during the government shutdown. Please see this petition to improve the procesing time: https://www.change.org/petitions/department-of-labor-dol-to-...
You don't even have to be an Indian citizen, merely India-born. I might be a Briton, but in the eyes of USCIS my nationality is classified as "Indian" since I was born there.
After your PERM is approved, you get to file for I-140, which takes another 4-6 months. Then you get to wait until your priority date becomes current which depends on your category and country of origin. This could be anywhere from immediate to 10+ years.
Once your PD is current, you get to apply for I-485 which takes anywhere from 2-6 months and includes doctors exams, finger printing and possible interviews by USCIS. Of course while they're processing this there is no guarantee they wont retrogress your priority date and put you back into the waiting game.
Of course all of this starts again if you change employers (but you do get to keep your priority date if you had an approved I-140).