Official Website
1
Follow this link: https://www.minecraft.net/en-us/login
Login into your Microsoft account or create a new one.
2
Click “Redeem” in the top-right corner of the website.
3
Choose the correct Minecraft product/edition bought and proceed with activation.
4
After redeeming your code follow this link: https://www.minecraft.net/en-us/download
Download and install Minecraft launcher.
5
Launch the Minecraft launcher and login into the same Microsoft account that you redeemed the code on.