I’m myself quite involved in teaching/introducing (but not the only one ofc)
Well in that case i highly recommend you that book i mentioned before (including a 19x19 commented). It could be a bit hard to find.(out of print then reedited). It was so appreciated by some chess players i did introduce to the game as answering perfectly to their needs. I mean a taste for something a bit more systemic (& exhaustive) well structured. Not everyone likes such approach.