You'll need a Microsoft account to download Minecraft but that's no sweat to do. Choosing between the two versions, Java and ...

Minecraft Bedrock vs Java Edition If you’re new to Minecraft and have heard conflicting views about which version of the game to buy, don’t worry - you’re not alone.

Titled Minecraft: Java & Bedrock Edition for PC, the newly merged version “will become the standard and only offering of vanilla Minecraft on Windows PC,” according to Mojang’s announcement ...

Crucially, however, you can only buy a copy of Minecraft Java Edition using a credit or debit card, and not Microsoft Account Credit. Adding credit to your child's account won't suffice.