[Nice to have] Better more immediate guidance on what keyboard controls are for beginners

[davidjoffe]

But should be unobtrusive and not 'annoying' or 'get in your way' also for experienced players .. eg maybe have a "Don't show again" option. It should also factor in that keys are redefinable. Also if someone has ported it to a platform where they have 'hardcoded controls' eg a game console then there might not be redefinable keys so in those cases those controlling the creation of the port should have a way to disable the message if it makes sense to do so?