This comes in two sets that are pretty self explanatory, It depends on what finish you would like on it in the 3mf file.

The wheels i used gorilla glue to stick them on, you can lay the truck on the edge of a table hanging to add them. I also made it a stationary pallet truck as i didn't want to have to chase it across the table. I also printed it all separate to save time and filament.

The handle just pushes into place pretty easy.

Try to turn off supports for the bottom pallet I've included separate 3mf files for the pallets. You don't need to add supports to these otherwise it creates a lot of work removing them.