>I have been trying to get the to work with my tablet and I am stuck on installing the usb driver to talk to my tablet. The docs from google say install in from here sdk\extras\google\usb_driver\ but they are not there. I even downloaded the SDK and still not there. Any idea where I can find the drivers?

Think it depends on your device : http://developer.android.com/tools/extras/oem-usb.html#Drivers
Google driver is here: http://developer.android.com/sdk/win-usb.html

FWIW, I recently switched to using Android Studio ( I'm pretty sure the download includes everything you need - but I'm not sure since I had the SDK already installed) : http://developer.android.com/sdk/installing/studio.html