I would consider it a favor if you stepped in and supplied some. I will not be going very fast so it will be possible to step in at pretty much any point and add or improve definitions. right now I think of this as "Introduction Mark II" and the aim is to get a preliminary description out there which is at least not too misleading. that means there will be topics to expand later in a "Introduction Mark III"
At some point some student of Ashtekar or Rovelli will probably write something that makes all this unnecessary. a real beginner textbook for Loop Gravity. but we cant afford to wait around for that because we dont know when it will happen