It usually means "make 1" stitch, and is considered an increase. How you perform the increase depends on the pattern. Some knit throught the front and back of the same stitch. Some lift the yarn between the last and current stitch onto the left needle, then knit it through the back loop.
M1 stands for Make One. A relevant link explaining in images how to do so is provided below.
To perform a m1 k1 m1 in a row of knitting, start by making a "make one" (m1) stitch, which involves lifting the yarn between the stitches and knitting into it to create an extra stitch. Next, knit one stitch (k1) as usual. Finally, make another m1 in the same way as the first, lifting the yarn between the newly knitted stitch and the next stitch to create another extra stitch. This sequence adds two new stitches to your row.
Usually in knitting instructions, the letter P stands for purl.
if(m1>m2) f=m1; s=(m2>m3)?m1!m3 what its meaning of this?
M 1
rnd is the abbreviation for round meaning one row
Yarn
cable knitting, tube knitting, four needle knitting, knitting in the round, and a straight knit
when you knit, you will notice a bar, or a horizontal line if yarn between the stitch. you want to pick that bar, twist it and put it on your needle.
This could be standing in a depressed area while knitting using a round knitting needle.
there is no hookset in knitting
No, knitting is a sport.