This is a super easy achievement but the menu has changed a bit since the last guide was written.
From the main menu, move to the right and select Snap Maps. From the next menu page push RB to move to Create.
As the other guide said, from there complete the 4 snap academy basic training levels, plus then the 8 advanced levels. To track which ones you have done, they go green with a tick once completed. Once you have done all 12 the achievement will unlock.
A tip before you start, when the game prompts you to “Play” to try out something you just did, as soon as you see “starting game” show up on the screen, you can hit
-> return to the editor and continue on the tutorial.