[kevingadd]

As mcpherrinm said, you can get a SIM for it at Walmart, or you can get it online. I got it online:

http://prepaid-phones.t-mobile.com/prepaid-plans

Scroll down and you'll see '100 minutes talk | Unlimited text | First 5 GB at up to 4G speeds'

You have to buy the SIM card online and have them ship it to you; then you open it up and use the activation info in the box to set up the $30 plan and pay for your first month. It's pretty straightforward. When I did it the SIM only cost like a buck so it's pretty much as advertised - no hidden costs.