Start with one octave
A small note range keeps the first questions clear. Use C4 through B4 before expanding to more octaves.
Ear training
Build note recognition from the keyboard outward: start with single notes, compare octaves, add black-key names, then hear basic major and minor chords.
Modes
A small note range keeps the first questions clear. Use C4 through B4 before expanding to more octaves.
After you hear a note, picture where it sits on the keyboard before choosing the answer.
Move from single white keys to black keys and chords only after your first note set feels reliable.