Use the knob at the end of the knitting strip as a fixing aid, as you now turn the strip in front of you so that the yarn is on the wrong side. Loosen the yarn and knit another row of "figure 8 loops".
If you now turn the knitting strip, you will have two loops on each knob. Now "knit": Use the hook needle to lift the bottom stitch over the top stitch on each knob in the front row from left to right. You can knit the front row and then the back row in this way.
To ensure that you have two stitches per knob again, always zigzag the yarn around the knobs and then knit the resulting stitches again by lifting the bottom stitch over the top stitch.
If you want to use a new wool color, simply cut the thread of the wool you are currently using and knot the end with the new wool.
Continue in this way until the scarf has reached the desired length.