I applied through a recruiter. The process took 3 months. I interviewed at US Army (Lexington-Fayette, KY) in Jan 2012
Interview
Very hard to get in. the medical screening process is very hard to get by. if they find out you went to the doctor or got a speeding ticket they have to get various waviers approved and that takes forever.
They sit you in an old building and ask you about yourself and your medical history. Then they document all this info before they have you sign a documents and waivers.
Just go to your local recruiter and take the ASVAB. After completing OSUT, you'll become an infantryman (11B). You'll be assigned your unit upon graduating. Make sure to stay in good physical shape.
You express interest and they call you. You will have to answer some basic questions about yourself and take a placement test. Then you will be sent to a medical processing facility to do a medical exam.