The goal of this PhD project in theoretical quantum information with bosonic (continuous-variable) systems is to explore new ways to quantify the resourcefulness of bosonic states and operations, in regard to their capability to provide quantum advantage for computation. Several measures allowing to quantify the amount of resourcefulness exist. Many of them were inspired by quantum optics for the choice of the experimentally accessible operations. With this PhD work, we wish to connect to the current experimental capabilities in microwave devices, and to provide new measures of resourcefulness that are rather inspired by microwave experimental capabilities.