Day 1:
Control an LED with a potentiometer. Clone this repository, and at the end everyone will make a pull request. I'll select one person's code to merge back into the repository for you to see later on.
Arduino IDE Download:
https://www.arduino.cc/en/Main/Software
Need this driver for the cheap Arduino's:
http://www.wch.cn/download/CH341SER_ZIP.html
Extra steps for Mac:
http://0xcf.com/2015/03/13/chinese-arduinos-with-ch340-ch341-serial-usb-chip-on-os-x-yosemite/