Here's a list of basic knots worth knowing.

Overhand knot

Bowline

Round turn and two half hitches/taught line hitch. Almost the same knot

Prusik

Alpine butterfly

Surgeon's knot

Clove hitch

Double fisherman's knot, as a connecting knot or a safety tie off

Figure 8 knot (double figure 8 and figure 8 loop)

That will cover pretty much all you need. Onc... See more