@ilovepapaEverything to know about the games can be found
Here and
Here.
And everything about the region can be found
Here.
If you ever have a chance with a Gamecube or Wii, or do emulation, the games are fun and a bit darker than the traditional games for sure.
I'd be looking at an Orre that takes place after the games; It leaves a few things open to the player that could actually make potentially good plot down the line if we wanted to follow it, and the two Shadow Pokemon epidemics the region suffered are a huge inspiration for my character to actually invest in his quest for knowledge.
If you don't feel like reading (Which I understand), I can bullet point some of the most crucial info. Though none of it is truly necessary to know unless we might use it, lol.