I don´t know why but, sometimes, the software hinders your project as it becomes really slowly after you use it many times in a row. I´ve had this problem with different desktop computers and laptops. But to be really fair. I´ve encountered this problem with some other software, so it might not be Movie Maker´s fault. Also, the good thing is that this doesn´t happen very often. All in all, Windows Movie Maker is a great versatile tool to edit and create videos.
The most basic way to produce a finished project is to export it as a video file. You can then use this file as a master copy of your video and keep it for archiving purposes. But you can also manually upload that file to various internet sites where it can be seen and shared. However, you can skip that step by uploading your finished project directly to YouTube, Facebook, and other sharing sites from within the program's interface. It allows you to input all the necessary information, metadata, descriptions and keywords to optimize your video so as many people see it as possible.
Don't assume that the gold membership is enough, although it did not state that for me on my system at the time. Absolutely ridiculous. I was unhappy but willing to pay some money for this software as it is useful, but to be barraged everytime I open it with a message about Gold and Platinum memberships and then to be told after 4 hours of work that I cannot export my video unless I pay the ridiculous price is horrible. 

The second big draw is communication. The app creates a unified inbox for comments on Facebook and Instagram and messages from Messenger, so that you don’t have to bounce between different apps in order to respond to people. The app doesn’t seem to cover every possible messaging vector inside of Facebook’s services, but it sounds like a handy start. <<