This guide will walk you through how to install the Arduino IDE to work with Adafruit's boards like Trinket, Pro Trinket, Gemma, and Flora. It's easy to program these boards by downloading and installing a preconfigured version of the Arduino IDE. You'll be up and running with your Adafruit board in minutes!
For most users follow the Arduino 1.6.x IDE install page to install a version of the latest Arduino IDE.
For users who need an older version of the Arduino IDE follow the Arduino 1.0.x IDE install page.
If you aren't sure what Arduino version you need stick with the latest 1.6.x instructions!