I know that feeling
Ok so you can create static pages, or use the home page, and place a collection list inside of it. Each cell will get one item and you design the item and it propagates. Inside of an item you can also place a link or a link block, and set the link with the purple CMS options, and set it to Current item.
This link will lead you to a page with only this item. (the CMS “node” page)
To set the content of this page and to design it, you have to use the CMS Collection Page template. You have one template ready for every collection you created.
Once in the Collection Page, design as if you were designing a collection list item, except you don’t need to add a collection list. Drag a title, image and anything and link them to the collection and it will be populated from the current item. You can change the current item shown here:
Does this make any sense?