Lost my page Dude!

Hi
I’ve only had my site for a month, and am still learning. Never very computer literate to begin with, I have a lot of trouble grasping the terminology.

I don’t know what most of the content on my dashboard means, but this morning I spotted “menus” and thinking perhaps it would help me set up a table of contents, I clicked on it. I clicked a couple other things, and got confused, decided I better cancel my clicks, and somehow lost all the content on my first page. I have rebuilt the page I want as my home page, the first thing I want people to see on my site, however I can’t figure out how to get it there. My home page now displays a message that says ‘Nothing happens’ or something to that effect, with a suggestion that I search. I can’t edit it. Can someone help me?