Albright -- Join two lines of different thicknesses.

The above knot is very useful to put leader on reel.Because most of the time your line is bigger that your leader.

Blood Knot - This is a high strength knot to join similar thicknesses of line.It's main advantage is it's low profile enabling it to run smoothly through rod line guid

Centauri Knot - This knot is principally used to attach hooks through the eye to the line. Works well on a wide range of line strengths and claims to retain 96% of breaking strain

Bowline - Also called the "king" of knots, the bowline is very versatile. It is used to form a temporary loop in a line which may then be put over a piling or cleat. It can also be used to attach a line to an eye. This knot wont slip or jam.
Start by making an overhand loop which looks like a six With the end of the line, come up through the hole in the six, around the back of the line youre holding and back down through the hole in the six. Grab the part of the line that went up through the hole and the part of the line that came back down through the hole in one hand, and the top of the line you were holding in the other, and pull.