these are knitted in the round, the pattern is free.
Leave away the instructions for the content of the patterned parts (M.1 and so on) and just knit the amount of stitches in stochinette. They have no thumb hole.
Well, just design your own pattern, if you want them just plain without tumb hole:
you need approx 30 stitches, if you do them in ribbing: a few more.
knit those in the round while knitting all knitts and purling all purls.
cast off, when they are long enough, make a second one to match the first one.
For the tumb hole: refer to the instructions in the link to yarn galery that Jan gave you.
This is an easy project that helps you tackle the knitting-in-the-round demon.