There are some excellent reviews of this machine here which I found very useful in making our choice. But it was still difficult so I've made a video to show the actual operation which I hope helps.
I will try not to duplicate the other reports and just make a few extra points to help you feel better about spending such vast amount of money to make coffee!
1. I was impressed with how less bulky the machine looks than the measurements might make you think. The measurements are for the overall dimensions. The actual depth of the "main box" is c30cm which is about the depth of a standard kitchen cupboard.
2. Basically you can programme this to make pretty much any coffee you want. I recommend you download the manual as a pdf from the De Longhi site to best understand it as the descriptions are poor.
3. The facility to use pre-ground coffee is of limited value. You can only put a level spoon in otherwise there are dire warnings of gumming up the works and invalidating the guarantee. So you can't make a particularly strong coffee though it is fine for a single espresso.
4. It is worth shopping around for these machines. We bought ours at £600, not through Amazon. Very happy with that price.
In my video I do not have time to cover the hot water spout which you can plug in to replace the milk jug. You could use this for making a longer coffee (they say this is better than putting more water through the grounds, which brings out bitterness) or even tea, or to heat your cups. It's quick and easy to do and a feature which is more useful than I thought it would be.