What you will need:

• node.js
• git
• Android SDK
• iOS SDK (for osx only)

To set android up on windows, check out this video

For everything else, the cordova docs are the best source of infomation

Cordova setup guide

With all the SDKs setup, you need to install ionic, cordova, gulp, and bower.

#windows
$ npm install -g ionic cordova gulp bower

# osx and linux
$ sudo npm install -g ionic cordova gulp bower

When that is complete, lets git clone this project and cd into it.

$ git clone https://github.com/driftyco/ionic-workshop.git

$ cd ionic-workshop

From there, were can cd into the various directories, and run ionic serve

Ionic Presentation