I applied online. I interviewed at Amazon (Tracy, CA) in Aug 2016
Interview
Generally a quick process. Just ask if you can lift 50lbs even though you arent allowed to lift 50lbs without a partner. If you say no they wont hire you though. If your a direct hire there is a chance there is no interview.
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.