Dwarf galaxies provide fundamental clues about galaxy origin and evolution. Many of which have irregular shapes and have processed little of their gas. However, many dwarf galaxies are very gas rich with star forming regions. Using the KOALA+AAOmega instruments at the AAT to observe galaxies and characterize their stellar and gas properties. In addition, analysing the 21cm H I radio spectral line of each galaxy’s diffuse gas provides the fundamental data to analyse local and global star-formation processes in galaxies, the feedback of newborn stars, the importance of inflows and outflows of gas, and the chemical evolution of galaxies.