Page inside page

Hi,
I want to post a “page” inside another page or if there is any easy way to embed a page inside another page so that I can see my similar sub categories of pages inside a particular page. Because I don’t want to create a long list of drop down menus so I’d rather link some of my pages inside some other pages to organize my website.
And I m not a code geek…so pleeeease explain in English not in codes.
Please tell me a good way so I can interconnect my pages,not only interconnect but show excerpts and featured image too.
Thanks in advance