Just pour the cream in and turn it on as high as you can, without it spraying out.
Just before it really starts to yellow and separate it will be whipped cream. If you were to add sugar at this stage you could frost a cake of eat it with fruit, unfortunately I have not learned to do this yet, but it is on my list!
You will let it keep mixing, turning it up as high as you can. I have also found that I have to stop and use a spatula to scrape down the sides of the bowl.