The Spool knot is used to attach the mainline to the spool. When attaching braided line it's advisable to make several extra wraps around the line.
Morse Code A Visual Guide
Simple Knot O_O
Drill Bit Sharpening Guide
Wood sizing chart. Did you know a 2x4 is actually a 1 1/2" x 3 1/2"? --Yep...and a lot of other ACTUAL sizes. *Plus the metric conversion for each.