The starting left side panel that shows all the supported command is quite useful for someone that is learning. However, it's either blocked by the demo screen at the start. Or it would be cleared every time a tutorial is chosen, and it doesn't show up at all when ?NODEMO is added. I think you might want to move that to the right, or move the starting tutorial/demo screen to not block that panel.
I'd like to keep the 'show goal' window open but it obscures the prompt for me (FF20) so I have to keep reopening it. I might not make it very far before abandoning it.
I already learnt a lot, but could have done with more help, not always clear what is expected (rampup3) and no way to see the solution... i got stuck on rampup3 a bit frustrated
Most of this is about advanced git features, Simple features are simple (checkin/out, push/pull, simpler branching). Which is 80% of what you need, and probably 99% of what you need most of the time.