If your flying anything than a single line kite you need to learn to wind your lines, into a figure of 8 winding. For replacement lines you'll be wanting a set of 44lb at about 20 metres long to replace the existing lines. SO thats 2 things you need to learn, the larks head knot (the purpose of this is to secure the kite to the line, and the handles) the more tug, the tigher the knot. AND to wind up your line properly so it isn't tangled when your unpack. You'll need to make simple loop first, THEN you can do the larks head (it has many names) This is how to tie your new lines so you can easily fly next time. I've also got a switch, and managed to cut the lines on another kite at the festival.. But they are great fun kites.. I've got a Nexus, also by prism.. Great fun:)