Tie the handful of knots that do almost every job, then lash sticks together to build something that stands.
A good knot holds when you need it and comes undone when you're finished, and that's handy in the yard, at camp, and around the house. The 1911 Handbook for Boys gave knots a whole illustrated section. Dan Beard warned that nobody learns knots just by reading, so keep a piece of rope in your hands while you learn.
Things to try
In any order, at your own pace. Tick what you've tried if you like keeping track; ticks stay on this device.
Knots and lashings to learn
Knot
What it's for
Overhand knot
The simplest stopper knot, tied in the end of a rope or thread
Figure-eight knot
A stopper knot that keeps a rope end from slipping through a hole and is easy to untie
Square knot
Tying the two ends of one cord around a bundle or package (not for joining ropes that will hold weight)
Sheet bend
Joining two ropes together, even if one is thicker than the other
Bowline
A fixed loop at the end of a rope that won't slip or jam
Clove hitch
Tying a rope to a pole or post; starts and ends most lashings
Two half hitches
Tying a line to a post, ring, or tree
Taut-line hitch
An adjustable loop that grips, for tent lines and clotheslines
Square lashing
Joining two poles that cross at a right angle
Diagonal lashing
Binding two poles that cross at a slant and want to spring apart
Shear lashing
Binding two poles side by side so they open into an A-frame