Does the surface of a CD conduct electricity?
Yes, in the row previous (row 19), you make a YO twiceWhen you come to them on the next row (row 20), you are to just drop them off the needle without working themThat leaves a big hole, and a loop of yarn from wrapping around the needleI'm not certain I like the effect, but that is the directionsRib means the alternating columns of knit and purl stitchesThey could be 1 and 1, or 2 and 2, or even 3 and 1 and any other combinationThe stitches above them are done exactly the sameThat is how you get the ribbinglike on cuffs of sweaters or on socks or hatsIt is elastic to make things hold on better(although booties on babies just don't stay on for long!) Is that the complete correct pattern? For some reason, I don't think that's the way it should beBut try it, and it may work well for you.
Yes, you drop both of the YO's to create a hole in the fabric as part of the designK2 P2 does mean you knit 2 stitches then purl 2 stitchesThis creates an expandable fabric that will fit better.
No it is plastic, and it doesn't conduct electricity.