Knot
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Special Knots, and Advanced Knots, for Wolf, Bear, Webelos, Tenderfoot, Second Class, and First Class.
Square knot Bowline Sheet bend Slip knot Tautline hitch Clove hitch Timber hitch Whipping and Fusing 
Here are the basic knots Cub Scouts and Boy Scouts learn. These few knots are the only knots you have to know to go all the way to Eagle. Crossreferences are provided to the Wolf, Bear, Webelos, Tenderfoot, Second Class, and First Class requirements.
Many knots below have very good Lesson Videos. Here is a general one for Scout Knots:
Overhand knot
The Overhand knot is used in other knots including the Square knot which is two Overhand knots. The overhand knot can be used temporarily but can untie very easily if tied around something. The overhand knot can be used as a stopper knot and can keep a rope from fraying or unraveling but the Figure Eight is a much better stopper knot.
 Required for
 Wolf Electives 17a. Learn to tie an overhand knot and a square knot.
 Instructions
Make a loop and go through it.
The Overhand knot is one of the Forty Knots.
Square knot
 
— Boy Scout Handbook p. 8 
Note: The Square knot comes untied easily and is not as strong as a Sheet bend.
 Required for
 Wolf Electives 17a. Learn to tie an overhand knot and a square knot.
 Bear 22b. Tie a square knot, bowline, sheet bend, two halfhitches, and slip knot. Tell how each knot is used.
 Webelos Outdoorsman #11. ...Show how to tie a square knot and explain how it is used.
 Webelos Arrow of Light #2 Tie the joining knot (square knot).
 Scout #6: Demonstrate tying the square knot (a joining knot).
 SmallBoat Sailing #7a: Square (Reef) knot  Clove hitch  Two halfhitches  Bowline  Cleat hitch  Figure Eight
 Sea Scout Apprentice #5. Square knot  Bowline  Clove hitch  Sheet bend  Two halfhitches  Figure Eight  Cleat hitch
 Instructions
Right over left, left over right, makes a knot tidy, and tight.
The Square knot is one of the Forty Knots.
 Granny knot
When your shoes keep coming untied, it is because you are tying Granny knots instead of Square knots. The Granny knot is given to show what not to do. The Granny knot will come untied almost immediately and is not used for any Boy Scout application.
 Instructions
Right over left, right over left, makes a knot ugly and WRONG.
The Granny knot is one of the Forty Knots.
 Lesson Videos
 Video: About the Square Knot  Video: Square Knots  Video: Different Ways to Tie Square Knots  Video: Square Knots
Bowline
 
— Boy Scout Handbook pp. 148149 
 Required for
 Bear 22b. Tie a square knot, bowline, sheet bend, two halfhitches, and slip knot. Tell how each knot is used.
 First Class #8a. Demonstrate tying the bowline knot and describe several ways it can be used.
 SmallBoat Sailing #7a: Square (Reef) knot  Clove hitch  Two halfhitches  Bowline  Cleat hitch  Figure Eight
 Sea Scout Apprentice #5. Square knot  Bowline  Clove hitch  Sheet bend  Two halfhitches  Figure Eight  Cleat hitch
 Instructions
Make a loop (top to you). The rabbit goes out of the hole, around the tree, and back into the hole.
The Bowline is one of the Forty Knots.
 Lesson Videos
 Grog's Animated Knots: Bowline  Grog's Animated Knots: One Handed Bowline  Video: Bowline Knots  Video: Bowline Bend  Video: Bowline Knots
Sheet bend
The Sheet bend is a much stronger knot than a Square knot and much more secure.
 Required for
 Bear 22b. Tie a square knot, bowline, sheet bend, two halfhitches, and slip knot. Tell how each knot is used.
 Sea Scout Apprentice #5. Square knot  Bowline  Clove hitch  Sheet bend  Two halfhitches  Figure Eight  Cleat hitch
 Instructions
Make a loop in one end. The rabbit goes out of the hole, around the tree and back under his path.
The Sheet bend is one of the Forty Knots.
 Lesson Videos
Slip knot
The Slip knot is also called the Running Hitch.
 Required for
 Bear 22b. Tie a square knot, bowline, sheet bend, two halfhitches, and slip knot. Tell how each knot is used.
 Instructions
Make a loop. Pull a loop up through the loop. Pull tight.
The Running Hitch is one of the Forty Knots.
 Lesson Videos
Two halfhitches
 
— Boy Scout Handbook p. 36 
The Two halfhitches knot is only secure when it is tight against the post.
 Required for
 Bear 22b. Tie a square knot, bowline, sheet bend, two halfhitches, and slip knot. Tell how each knot is used.
 Webelos Outdoorsman #11. Demonstrate setting up a tent or dining fly using two halfhitches and a tautline hitch. Show how to tie a square knot and explain how it is used.
 Tenderfoot #4b. Demonstrate you know how to tie the following knots and tell what their uses are: two halfhitches and the tautline hitch.
 SmallBoat Sailing #7a: Square (Reef) knot  Clove hitch  Two halfhitches  Bowline  Cleat hitch  Figure Eight
 Sea Scout Apprentice #5. Square knot  Bowline  Clove hitch  Sheet bend  Two halfhitches  Figure Eight  Cleat hitch
 Instructions
Loop over the top and pull through the hole to make a Half hitch. Make a second Half hitch on the outside. Pull tight.
The Two halfhitches is one of the Forty Knots.
 Lesson Videos
Tautline hitch
 
— Boy Scout Handbook p. 37 
 Required for
 Webelos Outdoorsman #11. Demonstrate setting up a tent or dining fly using two halfhitches and a tautline hitch. Show how to tie a square knot and explain how it is used.
 Tenderfoot #4b. Demonstrate you know how to tie the following knots and tell what their uses are: two half hitches and the tautline hitch.
 SmallBoat Sailing #7a: Square (Reef) knot  Clove hitch  Two halfhitches  Bowline  Cleat hitch  Figure Eight
 Instructions
Loop over the top and pull through the hole to make a Half hitch. Loop over the top and through the hole again. One last Half hitch on the outside. Pull tight.
The TautLine Hitch is one of the Forty Knots.
 Lesson Videos
Clove hitch
 
— Boy Scout Handbook p. 139 
 Required for

 First Class #7b. Demonstrate tying the timber hitch and clove hitch and their use in square, shear, and diagonal lashings by joining two or more poles or staves together.
 SmallBoat Sailing #7a: Square (Reef) knot  Clove hitch  Two halfhitches  Bowline  Cleat hitch  Figure Eight
 Sea Scout Apprentice #5. Square knot  Bowline  Clove hitch  Sheet bend  Two halfhitches  Figure Eight  Cleat hitch
 Instructions
Loop over the top. Loop around again below. Pull through the hole.
The Clove hitch is one of the Forty Knots.
 Lesson Videos
 Grog's Animated Knots: Clove Hitch  Video: Clove Hitch  Video: Various Ways to Tie a Clove Hitch  Video: Clove Hitch Knots
Timber hitch
 
— Boy Scout Handbook p. 138 
 Required for
 First Class #7b. Demonstrate tying the timber hitch and clove hitch and their use in square, shear, and diagonal lashings by joining two or more poles or staves together.
 Instructions
 
— Boy Scout Handbook p. 138 
The Timber hitch is one of the Forty Knots.
 Lesson Videos
Whipping and Fusing
Whipping:
Lay twine (or dental floss) on rope to form a loop. Wrap the twine around with neat, tight bindings until the length of whipping is two to three times the diameter of the rope. Pull the working end of twine through the loop. Pull hard on the other end of the twine to draw tight under the wraps. Cut off loose ends and roll the whipping under foot. Fusing: Required for:

External links
 Animated Knots: Basic Scout Knots  Forty Scout knots  Special Knots  Sailing knots  Fishing knots  Folsoms Knots  Animatedknots.com  Great Animations  More Animated Knots  More great Animated Knots  Still more  Knot Videos  Basics Videos  Basics2
 Other Knot Links: Advanced knots  Ropers Knots Page  Climbing Knots  Fishing knots  Knots Index
 Notable knot Index  shows quick method of tying
 StepByStep knots : 11 Basic knots fit on the front and back of one page.
 Six Boy Scout knots by John Geffre
 All lower rank knots (2MB PDF)
 When to use knots lashings (152K PDF)
 Ian's Shoelace Site
 The Notable knot Index