I applied online. The process took 1 day. I interviewed at Amazon (San Bernardino, CA) in Feb 2015
Interview
series of simple questions about your work ethic and value as well as experience. It could either be done in a group or 1:1. I had to reschedule and do a 1:1 which I liked better. Overall, as long as your a good natured person and can show that you have some of the values of Amazon its easy to get a job. I highly recommend forming answers before your interview. They are all typical Behavioral Analysis questions.
No interview at all, you go into the hiring center, take your drug test, fill out some preliminary paperwork, verify the building and schedule you want, your start date and that's it.
Not too bad pretty easy and straightforward, simple question surrounding handling and moving. Make sure you know basic safety rules as they will ask you, for example how do you carry heavy items.
Apply online, go to the on-site office for oral drug swab and ID picture. Start date is assigned once background check comes back. The actual start date will depend on how fast the check comes back but isn't normally delayed.