Honestly, once you dive into it, there's no real dedicated website for walking you through (I could be wrong here). You just kind of Google everything; however, you gotta know what you need to search for when it comes to Android/Java stuff.

I believe the Android API Documentation has an installation walk-through and even a few tutorials, though.

Google has some options for newbies, like the «Building Your First App» tutorial that you will find from this page: http://developer.android.com/training/index.html That's where I've started.

Udacity now have Android courses in partnership with Google : https://plus.google.com/+AndroidDevelopers/posts/jmSk2az9715