>>789517You really only need to know about 5-6 knots if you're just basic camping, and they aren't hard to learn. A lot of the knots in this infographic are repetitive, meaning many of them accomplish the same task.
If you're a climber, arborist, or some other profession that uses rope, you might need to know a lot more, but just for rigging a tarp/hammock/tent extra, I use these.
Zeppelin bend (joint 2 ends of rope together)
Bowline (make a fixed loop at the end of a rope)
Larks head (attach a loop to a fixed object)
2 half hitches (make a taught line fixed to a tree)
Prusik loop (make a moveable friction knot on a line)
A clove hitch can be handy, or just a simple square knot. Sometimes a truckers hitch too, or a marlin spike for hammocks if you use whoopies. None of them are entirely necessary though (unless you need the marlin spike for a hammock.)
