The current game has too many features yet too little tutorials to introduce them. I would like tutorials covering
- basic rocketry (Newton’s third law, Delta-v, staging, specific impulse),
- advanced rocketry (fuel types, engine types etc.),
- basic flying (launching to orbit, Hohmann transfer),
- advanced flying (aerobraking, gravity assists, and rendezvous).
As a new player who hasn't come from KSP or something, definitely more tutorials would be good.
Or going back to them as kmatsui said: I wanted to try one of the career missions myself without being told literally what to do in a tutorial, and I easily managed that mission, but then later got stuck and saw in a youtube video that someone else was doing that tutorial and given some missing information.