re: The best way I've seen stitches described is to imagine the loop on the needle as a horseback rider facing the point of the left needle. His right leg should be slightly forward for both knit and purl.
a GENERALLY true statement.
but in different styles of knitting this is not always true.
(see anne modesitt's blog for a tutorial on combo knitting)
in combo knitting, stitches that were purled in previous row, are turned.
that is for most knitting stitch are like this:
but its normal in combo knitting (when working stocking knit) to have:
and if working ribbing, (2 X2)
combo knitters are about 10% (or more) of knitters in US.
world wide, they are about 50% of knitters!