Well I am starting to get into app development for Android as well as other things as I progress through school. I downloaded and extracted the adt bundle from developer.android.com and am very confused. I know that every android device out there is not ready or capable to be running Android 4.2.2 as case in point my Galaxy Note 2 running 4.1.1. How do I download and access those other versions of the Android SDK then because I want my apps to be able to be ran on multiple devices. Please if you can offer me some assistance I would gladly appreciate it.