Here are some of the knots:
Figure 8 Knot
Figure 8 in a Bight
This knot is an alternative to the bowline and is used if you need a non-slipping loop.
We frequently use this for one end of a guy rope on a tent or awning.
We use this at the other end of the guy rope, the loop goes around the tent peg or a tree. The knot can slide up and down the guy line to adjust the tension.
Bunt Line Hitch
A bit harder to tie than the two half hitches, it holds better, especially on slippery rope.
If you are interested, here are some resources for further reading:
This is a free, open source book.
A site with good pictures even though it is in Dutch. Duncan Barbour suggested it.