This chapter gives specific instructions regarding the building of a tent where Moses would meet Yahweh and the ark would be stored. This would eventually become the tabernacle. It was to be considered a very holy place.
"Tell a craftsman to make". Yahweh is speaking to Moses, so the word "you" is singular. Yahweh probably expected Moses to tell someone else to do the actual work, but Moses would be the one responsible for seeing that the work was done correctly.