Being dyslexic, and pretty mechanically hopeless, I have always struggled with knots. Of course, I have mastered the bare minimum for climbing - overhand, bowline, figure eight, munter and clove hitch, prusik - however the more nuanced and specialized knots have been beyond my ken. However, Grog's animated knot website and YouTube videos make even the alpine butterfly and Klemheist something I can aspire to!