The video tutorial is here and this particular lady has a whole channel on youtube of easy crochet projects. I always find it funny to watch how someone else hooks!
The link to the written tutorial is here.
To fit my size 9 foot I ended up doing 11 rows after the toe of the slipper is done rather than the 9 suggested. And dare I admit it, but I actually used a Spotlight acylic yarn for them. I much prefer to crochet with wool or cotton but I figured these would get a quite a bit of wear and tear and to make them easier to throw them in the wash, acrylic it was... plus, I am trying to use some of my stash up!