Compiled Vala app won't run - Elementary OS

Compiled Vala app won't run - Elementary OS

I have just installed Elementary OS and am learning what looks to be a
pretty cool language. It's very similar to C#. I am following the
tutorials step-by-step, though there are a few problems.
I'm not sure if these issues are due to my noobiness on Linux, or if I was
supposed to install some things before writing Vala code - but I have
installed everything the tutorial said to install.
The problem is that the Tutorial teaches us about Launchpad.net. It then
later on tells us to ah push our little hello world app to Launchpad.net.
Now I have created my account on Launchpad.net and I used Terminal (as per
the tutorial) and when I "push" code to Launchpad.net - I don't get any
feedback in the terminal - what I mean by that is, I don't know if the
push was OK or if there was a problem.
Now, with the compilation of the Tutorial's sample program. WHen I compile
it - again - there's no feedback like "Successfully compiled" or "Not
compiled". Which I don't mind, but it turns out it did compile. It created
a program, but here's the problem. I can't run it.
When I click/double-click, it won't open.
I've gone through this tutorial many times, I've done everything 100% as
it says in the Tutorial but it just won't work.
So:
Code pushed to Launchpad does not appear in Launchpad.net, and
After compiling my app from the tutorial, I cannot run the app.
Can someone please help? I'm not sure what to do, or what I've done wrong.
The tutorial