I agree, learn what you want to do. If you want to understand the process of toe-up socks, here's a good overview. https://www.youtube.com/watch?v=IYDzY-DEiQY
She does a Fleegle heel where you increase the stitches on the heel side then decrease via short rows. Others use the short rows to shape the heel entirely. Don't worry about that just yet, just know that as you explore sock knitting you'll encounter the different methods.
I learned to knit socks doing Lifestyle Socks, I like this method because you don't need to make a gauge swatch. http://www.ravelry.com/patterns/libr...-swatch-needed
Here's a great tutorial on socks, whichever way you want to do them. http://www.cometosilver.com/socks/
The author has a sense of humor, crucial if you want to learn to do 2 @ time.
Some of us are knitting socks right now in a sort of it-just-worked-out-that-way KAL. http://www.knittinghelp.com/forum/sh...d.php?t=111195
If you are new to magic loop, you'll want to work on that first. http://www.knittinghelp.com/videos/advanced-techniques
If you scroll down you'll find Amy's video tutorial. Then you can learn to cast on for two at a time anything http://www.knittinghelp.com/videos/advanced-techniques
There are a number of ways to cast on for the toe and I won't overload you more with those right now. When you get ready to look at casting on for toes, just ask.
I started knitting toe-up socks, have done top-down but really can't see why I'd want to do them that way again. I've yet to actually use a pattern for socks. I even use the toe cast on to start mittens.
One last thing, I suggest you do your first pair in worsted weight or dk yarn. You'll have a nice thick pair of socks fairly quickly and you can enjoy the results of your learning faster.