You'll probably want to start out with a Block Erupter USB (http://www.amazon.com/ASICMiner-Block-Erupter-USB-Sapphire/dp/B00CUJT7TO). Amazon has them way overpriced, they cost $10 most everywhere else.
Depending on how many USBs you buy, you may want to buy a USB hub.
A computer which you can plug a USB in to.
That should be it! You can learn more about bitcoin mining here: www.bitcoinmining.com
This unit has a 3 prong 110 v wall plug and standard USB ports for connected devices. It cannot be used to charge phones, tablets etc. only to provide additional USB ports to a powered device such as a laptop computer.