Samsung's Series 5 550 is a great device, if you live off the Internet. I have been using it for a while and discovered quite a lot of things which are hidden by default.
One of the gripes I had with the platform was the lack of 'delete', 'home' and 'end' keys as being a writer I use them often. But there are combination of keys which you can use to achieve the same. There are gazillions of shortcuts but I am writing down those which I often use on my regular PC.
As John Abbott suggested in comments, you can alway use Ctrl+Alt +/ to see all shortcuts. The idea of giving the above shortcuts was to fill the gap of missing keys on the Chromebook keyboard.
I will be writing about the Chromebook on a regular basis, so if you are a Chromebook user, you may want to visit this page.