The study of voids and galaxies residing there is crucial for our understanding of the formation and evolution of galaxies. Galaxies in voids in general reveal lower metallicity at a given luminosity than similar objects in the denser environment. Several mechanisms can be responsible for this effect, such as metal-poor gas accretion, mergers/interactions, or the unevolved state of a galaxy. In my talk, I will present our observations of void galaxies and focus on different mechanisms affecting their properties and evolution. We found a population of extremely metal-poor dwarfs that are supposed to be good candidates for very young galaxies in the nearby Universe. The non-equilibrium state of their gaseous HI discs supports the hypothesis of their suggested unevolved state. Besides, we found strong misalignments between gas kinematics and optical morphology together with peculiarities in their chemical abundances for several more massive void galaxies that can be explained by dwarf-dwarf mergers or recent episodes of gas accretion. In particular, our new results on VGS ? 12 - a galaxy with HI polar disc, sitting in the wall between two voids, reveal strong evidence of metal-poor gas accretion from the Cosmic Web.