Use the official Minecraft website or launcher to buy and install the game legally
Download the Minecraft Launcher from the official Minecraft site
Sign in with a Microsoft account
Purchase the version you want, if you do not already own it
Install the game through the launcher after purchase
Use the free demo version if you want to try it before buying
Check whether you already own Minecraft on another platform or account
Look for official promotions or bundles that include Minecraft
Avoid pirated or cracked copies
Avoid third-party sites that claim to offer Minecraft for free