Yarn kitten, I would, for the most part, agree with knitpurlgurl and some others here. I just learned to knit in November 2007 after decades of periodic crocheting and several failed knitting attempts over those years. I had never managed to get past the casting-on stage before, but I got really stubborn this time and just kept trying till I got it. I knitted a lot of sample, practice squares in several different kinds of cheap yarn (Caron Simply Soft, Lily Sugar N Cream, etc.). Even if it was only 15-20 minutes, I made time to knit every night after work and dinner, and as much time as possible on the weekends. After getting comfy on a swatches and a couple of dishcloths, I ventured into scarves and made two garter stitch, then two in basket weave, then I cabled one. Next, I did hats knitted flat (Lion Brand has a great, easy pattern for a flat-knitted watch cap in chunky yarn), and did three of those. Finally, in mid-January, I started my first (baby) sweater, and it was so easy after all that practice on other stuff!
So, as one newbie to another, my advice is similar to KPG's - knit every day, even if it's only for a few minutes, and start with easy shapes (squares, rectangles, etc.) and less expensive yarn. If the skein costs $2.49 for 300 yds, you get a lot less frustrated when you have to start over than you do over a 100 yd skein that cost $11+.
Good luck and keep trying, we know you can do this!