Bear with them, they’re difficult to do because of the shoulder WTB put around the edge. This makes it difficult for the tyre to seat (it needs to push over the ‘lip’ of the shoulder) however in my experience made for a better seal and a more robust set up once done.
Try putting the tyre on with a tube, inflating the tube to 50p.s.i or so. This will pop the tyre into place. Then you can take off one side of the tyre, take the tube out, and re-inflate without the tube. As one bead is already in place, there is half as much ‘gap’ for the air to hiss out of, so it should pop the other bead on fairly easily.