Figure-of-eight Loop Knot
Step01: Fold the end of your the tag end and main line over to form a loop

Step02: Fold this over to create a second loop, as shown.

Step03: Fold the end loop over the tag and main line.

Step04: Pass this through the first loop that you created.

Step05: Moisten the knot with saliva to prevent damage.

Step06: Pull down tight, trim the tag end and you have a super strong loop knot!

This information and many more basic fishing tips can be found at