What product should I buy first?

The answer depends on your child’s interest. If your child likes the action of the Rokenbok machines as well as building , we suggest one of our Complete Action Sets.  Each of our Complete Action Sets includes: 2 interactive machines, a ROK Star Controller, construction pieces and building plans. Everything needed to start a Rokenbok World of their own.  
If your child likes building blocks, Then we suggest ourDeluxe ROK Blocks.ROK Blocks are a unique building block that allows children to build in three dimensions. ROK Blocks can be assembled in thousands more combinations than traditional blocks. Plus they are compatible with all other Rokenbok sets so they won’t out grow them.