Re: Essential knots?
I would have to pick four
1. Bowline - simple all around and universal
2. clove Hitch- simple fast secure to a piling or post
3. cleat hitch- both locking and non-locking
4. two half hitches- simple and used to back up most other knots
The following site is a good spot to learn most that you will need and some just for fun like a Monkey's Fist