No, cases aren't usually included with proper modulars. While the complement above isn't bad, what I'd suggest is to perhaps look at something along the lines of a patchable synth first to get your feet wet and get some understanding about how synthesis architecture works first. By doing that, you'd have a firmer grasp on what needs to be in a proper system and you'd have the system's fundamental building blocks in the form of the patchable, onto which you can expand as needs be. Something like a Moog Mother32/DFAM pair, Soundmachines Modulor114, Plankton Ants!, Kilpatrick Phenol, Pittsburgh Microvolt or Blackbox, or Arturia MiniBrute2 and 2s pair might make a lot more sense from a learning standpoint for right now than trying to build up a complete system.