Finding resources around spiritual warfare can sometimes be a difficult task. We’re under-served by those who are dismissive of the reality of spiritual warfare but also put at risk by those who invest in it in ways that the Biblical record doesn’t support and with an imbalance in the amount of time spent focusing on it.
That said, not engaging in study on spiritual warfare is a mistake. While looking for solid teaching on it, I found this course by Dr. Gerry Breshears on biblicaltraining.org (they have a mobile app where you can listen to the lectures.)
The entire class is a bit meandering but I found the last two lectures very helpful as an intro into dealing with demons.