The chess clinic · four patterns, five lessons
Four patterns decide
most beginner games
No notation needed. Pick a lesson, step through with the buttons or your arrow keys, and watch what actually happened on the board. Red means danger, green means the fix, yellow shows the move just played.
"Can anything take this for free?"
Ask it out loud before every single move, about the move you are about to play. It is boring, it is mechanical, and it is worth about 100 rating points to any improving player. The instinct is to make your own plan and play it. This is the one moment to check theirs first.