This is a video shows you how to tie a surgeon's loop. You start with a large loop, and treat it as one. Then just tie a normal overhand knot, but instead after that you pull it through once more as shown in the video. Then pull both ends to tie the knot up. This is a very strong knot so it's a very good loop to know. Their website also has much more information on how to tie this and other knots.
Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.