I want to rebuild this CMS Slider from this video: https://drive.google.com/file/d/0B1wj_0Q5QVSOc055NzBkY01VOWc/view
At 2:56 he is talking about limiting the items in the list.
I cant find the option on my collection list. Is it somewhere else or is this option completely removed?
It should still be there - click on your collection list, then settings, then collection list settings. Just under the filter, and sort options is a tick box for ‘limit items’.
Can you take a screenshot if things are looking different for you? Or share your preview link (project settings) so we can take a look specifically at your project.