Knitting is not the same as crocheting. Knitting uses two (or more) needles, while crocheting uses a single hook.
To start, I would simply knit away, without worrying about making anything. Just knit for a certain length until you're comfortable with it, then just purl until you're comfortable with that. After a while you can start knitting and purling along a row, until you're comfortable with that.
Of course, some people will immediately take a pattern and go with it from the beginning. There's nothing wrong with that, except there's a higher probability of it not turning out right. My cousin decided to go this route and was discouraged that it didn't turn out "perfectly". I tried to tell her that even now I don't do it perfectly, but she doesn't want to try again.
I (just) looked at the hat pattern you want to do, and want to point out that it is a crochet pattern, not a knit pattern.
So for crochet, you just practice your sc, hdc, dc until you know what you're doing (and where to do it!). The hat is all (that I saw) hdc, so other than the technicalities of it, once you know your sts, you can at least give it a go!
sc = single crochet; hdc = half-double crochet; dc = double crochet
What I have most trouble with in crocheting is turning at the ends of the rows. I'm sure if I did more of it I could solve that, but I prefer knitting. Mine would alternate between growing and shrinking in width. Made for a very interesting blanket LOL