Ok here comes the fun part. If you have a big head like me, cast on about 70 stitches. But I recommend to cast on about 60-45 stitches. The knitting will cause the hat to stretch so don't really worry about it.
Knitting: I don't want to write the knitting jargon not only to confuse noobs but they confuse me too.
Knit one and purl one until the end of the row. That's it.
Then when you knit the other row make sure you knit the purled stitches and purl the knitted stitches.
Do this until the hat is about 5 to 6 inches long. Then remove the stitches by taking two off each end. You do this by taking two loops and knit (or purl) instead of one. So that when you are finished with that row, row X, will have 68 instead of 70 stitches.
Remove the stitches every four to five rows until the hat is about 8-9 inches complete. I wanted my hat to be a little short, like Zissou so I left it about 8 inches long.
Cast off the hat and you should have a hat that looks like a bell shape.