The clinch knot is extremely easy to tie and it is also very dependable.
The Albright Knot
The Albright Knot is a versatile knot that has a wide range of uses. It is only moderately easy to tie but it is suitable for joining different types of fishing line (monofilament to braided, braided to wire, etc.).
Non Slip Loop Knot
The Non-Slip Loop Knot makes a very strong fixed loop in the end of the line. Because the loop doesn't grip the lure, it makes a flexible attachment and allows a more natural action.
The Blood Knot
The Blood Knot is a simple, easily learned and very effective way of joining two similar sized lines.