Assuming you are asking about knitting instructions:
The yarn forward and round needle method is a way to knit in the round using only one needle. You start by casting on your stitches onto the needle, then yarn over (bring the yarn around to the front) and knit one stitch. Continue in this pattern until you have reached the end of the row. Then, turn your work and repeat until you have reached the desired length.
This method is often used for small projects such as hats or sleeves, where it can be difficult to manage multiple needles. It is also a good way to try out circular knitting if you are new to the technique.