Here are some of my favorite knots.
>Square Knot
>Bowline (tying it with both hands, and with one hand)
>Double Fisherman's Knot
>Alpine Butterfly
>Figure Eight Loop (both on a bight and using the figure eight follow through method)
>Timber Hitch
>Clove Hitch (both tied on a bight and tied with a free end)
>Prusik Knot
>Directional Figure Eight/Inline Figure Eight Loop
You should know how to coil rope so that it doesn't tangle when you uncoil it. I mainly use the butterfly coil and fireman's coil.
If you ever use webbing you should know the water knot and you should learn how to tie a webbing harness. I wouldn't recommend using a webbing harness during anything other than an emergency though. It's really uncomfortable.
>>524046
The square knot shouldn't be used for anything outside of bindings.