Getting Permanent Residency Status First Step

Here is where you go. Map of INM office

Have your pics taken at Photo Duran on Vicente Guerrero between Nicolas Bravo and Ejido. Infantil is the kind you have to get. They understand that all your hair has to be slicked off your face, behind your ears and no jewelry. It will look like your worst Costco card pic.

Go to the office with everything you took to the Consulate just in case. Smile and say please. They will spend some time on the computer checking everything. They will tell you to pay and give you a piece of paper. Go up the block to HSBC and don't get in the teller line but go to the lobby person who will print out another piece of paper. Then you go and pay and take the receipt back to the Immigration office. Even though they say they will email you to come back for the fingerprints and then the card don't wait, just keep checking in in person. Often they are too busy to do their emails. The only people I have seen having any problems have been obnoxious gringos who get loud and belligerent (never a good idea with any beaurocrat IMHO)
It is not hard.