So my younger brother wants to play Injustice 2 when it drops and of course I'm gonna teach him. My question is how do I teach in a way the prevents frustration? I started by trying to teach him basic string-> specials (supes 3xxBF3) and he gets frustrated. What things (or even injustice 1 characters) should I start him off with?
First of all, you need to teach him the following in order:
1) Fundamentals (footsies, pokes, OKI, etc). If he gets used to those stuff, then move on.
2) Find a character he wants to learn so much, and then look in the YT videos for basic and advanced combos.
3) Once he gets used with the combos, train together in the private matches to get used with the MUs, the strategies, the tactics, etc.
You need to learn him the knowledge, and then the experience. Without knowledge he will have a bad experience. This is the only way to become a very good player.
Good luck.