I agree with utopia760 That tutorial is the bomb.
i would practice casting on and knitting in the round before starting your sock.
Other thing you will need to know is how to cast on, knit and purl, how to switch between hem mid row(you bring the yarn to the front or back under the needle . .easy) , how to knit in the round on double points (much asier than it looks) slip a stitch (easy peasy ) and how to pick up stitchs (little trickier). other wise socks are the perfect project for bginners who can do basic stitchs.
also trust the pattern. th hel gusset magically forms if you follow the steps.