Assuming you would like a blog post discussing how to knit an I-cord:
An I-cord is a small tube of knitting that is often used as a decorative edging or handle. It is very easy to knit and only requires basic knowledge of knitting stitches. To knit an I-cord, you will need a piece of yarn and a pair of needles.
Cast on the desired number of stitches onto one needle. For this example, we will cast on 3 stitches. Next, slide all the stitches to the other end of the needle so that the working yarn is at the opposite end. You will now have a loop of yarn around your fingers with both ends of the needle sticking out.
Now simply knit those 3 stitches as usual, but do not turn your work. Instead, slide the just-knitted stitches back to the opposite end of the needle (so that they are now in front of the unworked ones), and bring the working yarn around behind them again. You have now completed one row.
To continue knitting additional rows, simply repeat these steps - always sliding all 3 stitches to the opposite needle before beginning to knit them again. After awhile, you will see your I-cord begin to take shape! When you have reached your desired length, cut off the yarn leaving a long tail, and pull it through all remaining loops on your needles