Now that you've downloaded this pre-release version of NPS, you are probably wondering what you're supposed to do with it. I don't ask much.
The point of pre-release versions of NPS is for me to learn the user's wants and needs and to adapt the program in the future. The only way I can do that is if you do your part by sending me feedback about the program.
It's simple, really. Just click everything you possibly can. Don't be discouraged by the "Not Implemented" warnings; just move on to something else. Try to use the feature. If it's too complicated or unintuitive, tell me! If you think I should add something, tell me as well!
In the spirit of the above, reporting bugs is an important and necessary step in the testing of any program, NPS included. If you don't report the bug, then it will keep showing up in future versions until someone else finds it... so why not squash it now?