Hi and welcome. Go to your library and find the knitting section; most of them have quite a few beginner books. You can look at the videos on this site, this page - http://www.knittinghelp.com/videos/learn-to-knit
- has some information on the Basics as well as links to how to cast on, knit, etc.
Then go to a craft shop and find some needles, size 10 are good, and yarn, a light colored smooth medium weight. Then go home and practice. And practice and practice. A scarf is about 6" by 60" and it can get really boring and frustrating to make something that large right off, but if you make a sampler for a first project, you'll learn too. Cast on and knit every st on all rows for about 4 inches or so. Then do a row of all purls and alternate a row of knit with a row of purl. You can make increases and decreases and do ribbing. Those are the basics, and then you could think about a scarf or dishcloth or something else.