I don't know about easy. Today we have exactly 1 proven reusable orbital class family of rockets: Falcon. And even at that Falcon 9 only recovers 1st stage and the fairings. And Falcon Heavy has never recovered the center stage.

There might be more in a year or two (New Glenn, Neutron, Starship, a Chinese one), but for now, I would call it extremely difficult, not easy.