How would one use Remote Events/Functions?

I can't really think of a logical scenario for this.

--in the LocalScript
local RemoteFunction = --insert RemoteFunction hierarchy here
print(RemoteFunction:InvokeServer("bar")
--end of LocalScript

--in a normal server script
local RemoteFunction = --insert RemoteFunction hierarchy here
function RemoteFunction.OnServerInvoke(variable)
print("foo"..variable)
return "foobar :D"
end
--end of server script

Output:

LocalScript foobar :D Script foobar

Basically, the LocalScript gives the Script a part of the word "foobar," and the Script prints its part of the word along with the LocalScript's part of the word, to form the whole word. The LocalScript then prints the result that the Script gave it.

EDIT: Return does exactly what it sounds like. It returns objects from a function.

function returnText()
return "hello!"
end

print(returnText) --prints "hello!"

RemoteEvents do the same thing as RemoteFunctions, just RemoteEvents don't return anything, minimizing latency. So basically, RemoteEvents just allow communications between LocalScripts and server Scripts, and vice versa.