We've added a series of introductory tutorials that cover the various concepts behind Space Station Designer. This build includes tutorials for the following categories: 'Basic Concepts', 'Astronauts', 'Resupply Spacecraft', and 'Above and Below the LEO station'. We'll be uploading the remaining tutorials in the upcoming days.

We've also implemented several fixes to the UI code. This should fix all the various issues reported related to buttons that suddenly become unresponsive.