Help-my edges look crazy

I have taught myself how to knit through this website and books, and am knitting my first scarf. I’m doing really well except those crazy looking edges. I have tried to slip the first stitch but it still looks weird. What am I doing wrong.

Are they really loose? That is pretty typical. When I am knitting, After I make the first stitch on a new row, and when I insert the needle into the second stitch (but before actually knitting the new stitch) I give the working yarn a little tug, and that seems to help.

There is also a video here on fixing messy edges on this page: