Well, to see other people's repls, you can click on their name, like this:

and you go to the tab called "Repls" (Which is the first tab you see):

and, you click on a repl...

and you can see their repl!

oh, and to get a starter project, go to the place on share called "Templates":

and click on the post, click the "open":

and you "fork" it! (Make a copy), which you do by clicking the "fork" button:

Hope this helps!