1. Prepare wool and needles; Let's start with stitches. Let's start knitting demonstration with 38 stitches. In actual knitting, knitting needles should be started according to the required sweater size.

2. Distribute these 38 needles on three bar needles, and weave one needle as the lower needle and one needle as the upper needle; Start knitting the hem. Just weave the hem to the required length.

3. After the hem is knitted, start to knit the next stitch and knit the body part of the sweater. So I knitted all the way to my armpit.

4. Then start to divide the front membrane and the back membrane. Leave two stitches under your arm and put them on with a pin for later use. There are 17 stitches in the front and back pieces. Start knitting the back pieces first. Knit the back piece to the back collar, leaving 7 stitches and 5 stitches on each shoulder.

5. Next, knit the front piece and continue to knit to the neckline, leaving 5 stitches in the neckline; Then add a ball of thread, knit both shoulders upwards at the same time, and receive a needle on each side of the neckline; Knit a row and then close the needle, then continue to knit to the same height as the back piece and then close the needle.

6. Then turn it over and sew the front and back pieces on your shoulders.

7. Then turn it over and start the collar; Pick up the collar, knit the upper and lower needles to the required height, and close the needles to complete the knitting of the collar. Then pick up the sleeves, including two stitches on the left and right sleeves. After picking it, start knitting the next needle, and put the needle on the extension line under your arm according to the size of your sleeve.

8. After the sleeves are woven to the required length, then the hem is woven, and then the needles are hidden, so that the sleeves are woven. The other sleeve is knitted in the same way, thus weaving the simplest sweater suitable for zero-based learning.