A generic quasi 2 dimensional superfluid confined in a rotating circular trap could present quantum vortices. According to the Point Vortex model, vortex is effectively described as a point-like particle around which the superfluid flows with quantized circulation. It has been proven that at equilibrium the vortex-array is a composition of concentric regular polygonal structures. Non-trivial excitations of these stable configurations are the so called Tkachenko modes, microscopically associated to elliptical precessions of each vortex around its equilibrium position, representing a macroscopic deformation of the vortex-crystal. Recently it has been also proposed a model for point-like vortices hosting in their cores massive particles.