Discussion: Before you begin using the Arduino IDE, you must first learn how to download, install, and set your preferences. This lesson is specifically tailored for those who use a Mac. (The last lesson covered this same topic, but for PC users.) I'm currently running Mac OS X Yosemite. You are probably running a newer version of Windows. However, the following instructions will be almost identical from one version to the next. If this should ever change, I’ll update this lesson to reflect those changes. Find the Arduino IDE Download First, jump on the internet with your favorite browser, and navigate to www.arduino.cc. Look for the tab labeled “Download”. The page on which you land might look a little different than this. It does change from time to time, but there will always be an obvious tab for Download. Go ahead and click Download. We're currently working on version 1.6.5, and what you'll do is select your operating system. Click on that “Downloads tab”. That will bring ...