The very website that you're downloading the Android Studio from contains all of the data and information required by a developer to kick-start the Android application development process.
So, start from the very first page and read till the end of the documentation you will surely understand what are the best practices for Android application development and what a developer must use, here is the website's first page:
http://developer.android.com/index.html[
^]. Learn all of the tips provided their.
Good luck.
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