Good advice from the two ladies above me. There are YouTube videos for spinning seams if you want to do the 4-patch method. Nesting only means that the seam allowances are pressed in opposite directions so they can snug up against each other when sewed. It doesn't require clipping anything. I'm sure there are videos online of this too.
Good luck!
Found you a good little video on nesting seams:
https://www.youtube.com/watch?v=qqbFD7m44hg