>>zinger+(OP)
One of the things I've learned from teaching knots to Boy & Girl Scouts in the BSA is that you must constantly re-learn them or your skills will founder. It's not like riding a bike for me. That could be a visual-spacial memory thing, but many of my co-knot-tieing scouting teachers seem to have the same experience... so this site is perennially useful.
Favorite knot (involving a Rabbit going "through the hole, around the tree, and back down the hole"): Bowline Knot