its all up to you.. there isnt much grading, especially in the basic section since im not a basic coder..
the exe is not important -- paste code and select+highlight it using the code formatter drop down box or attach your source code, whatever's more convenient. attach screenshots if you want feedback on them
the main point of the self-teaching school is to motivate you to work on stuff, so it's mostly on the honor system.
after you complete one assignment you unlock the next, and so on.