Quickest Way To Install Android ADB and Fastboot (with drivers) on Windows

Before Proceding You should learn what is ADB and FastBoot:

ADB :Android Debug Bridge

This works when the device is powered on and booted into OS or Recovery. The tool helps in sending basic Linux commands, and a variety Android-specific commands from PC to connected Android devices.

Fastboot:

Fastboot mode allows you to flash any partition on an Android device like system, boot, recovery, cache.. etc.Using Fastboot / bootloader, you can also flash the custom built .img files via fastboot. For example, a custom recovery like TWRP or CWM.

Download : 

ADB installer v1.3

[Guide] Install Android ADB and Fastboot : 

• First Download the adb-setup-1.4.2.exe file from the download link above.
• Double-click/Run the adb-setup-1.4.2.exe file.
• You will see a command prompt window with blue background. Say YES to all the prompts on this screen.

└ To say YES, just type Y and hit enter.

Once ADB, Fastboot and Drivers are installed, the setup window will automatically close and you’ll have a working ADB and Fastboot on your Windows.