Simply start by making your kali linu USB Bootable.
For that you will need
1. Win32 disk manager.
2. A USB with minimum 4GB storage.
After that you can easily convert your USB to Bootable Linux USB
Now Follow the steps in this link to make Kali Linux USB https://youprogrammer.com/install-kali-linux-usb/
After successfully installing Linux in USB you can enjoy it until you format it. After formatting, follow the above steps again.