Superconductivity has attracted attention in the scientific community since 1986 with the potential of widespread application of devices based on various physical phenomena surrounding superconductors being realized once T_c is greater than the boiling point of liquid nitrogen. For those application requiring the employment of thin films of these superconducting metal oxides, chemical vapor deposition appears to be the preferred method of fabrication at the present time. This paper briefs the history and the fabrication by MOCVD, then details the vaporization of precursors, kinetics, delivery control, mechanistic analysis of the process, microscopic analysis of YBCO formation by MOCVD and mechanistic studies with individual YBCO precursors.