The wallpaper displays the three knots usually used to attach tarpon flies to leaders. The open loop formed with the Homer Rhode loop knot is sometimes needed to let a fly dance on its own in calm water.
Many folks feel though a fixed knot provides better hookups.
Small eyed hooks may become cocked with the 3 turn clinch knot. A snell avoids the problem and you don't need to run the line through the eye of the hook. The Huffnagle knot is by the far the most preferred attachment method for heavy shock leaders to class tippets. It does demand a double line to provide enough strength to snug it down. You should learn to tie a bimini twist and sometime in the future I'll include instructions here for that.