Thanks for trying out my game!
I have noticed that Windows might have some issues with full-screen mode. If there is any UI scaling set from Windows full-screen mode just does not work. Resizing should work. If you run it with window border even Maximize button should work.
Another workaround could be that folder where you unzipped the downloaded file should have oros.cfg file. That is just text file and it can be edited and any resolution can be set from there. Of course this is not optimal. If you like you can always make issue to Github project page and try to explain in detail what does not work.
Currently game only supports text tutorial. I haven't done much for tutorial since game is not done yet and things may still change. Also all tutorial text can be viewed anytime from the help button. Yes tutorial is important for new players, this current version works dynamically so it does not matter what galaxy settings or space race human player chooses to play, it should still work.
Scouting is very slow at beginning but it will get faster when you get better scanners. Also map can be trade with other realms. There is also possibility to leave scouting and exploration under AI handling. This must be set for each fleet separately. Select fleet, Click view fleet and click auto explore button. Although AI exploration it is not optimal but it is using same exploration as AI challenging difficulty.