Almost every guide which covers installation, recovery, backup etc, starts off by getting a hold of adb and fastboot. To get these you need the Android SDK Tools
To get a copy for your self start off by downloading the Standalone SDK Tools from the Android Developers website:
Extract the downloaded file to a location of your choosing on your computer.
Navigate to the folder you installed / extracted the SDK tools to and launch the Android SDK Manager.
Install the following three:
- Tools > Android SDK Tools
- Tools > Android SDK Platform-tools
- Extas > Google USB Driver
Hit Install, wait for the Android SDK Manager to download and install the selected packages.
That’s it, you should now have a working copy of ADB and Fastboot.
This guide covers the question on how to enable debugging mode as well as how to verify it: Follow this guide.