I've been with this guy off/on for a couple years now. Purely fingerstyle (you pick the melody line..not just strumming) Level 1 thru Level 6. You get into level 5-6 he brisks thru the tutorials rather quickly..based on the assumption you have some skill to be looking at 5/6 grade lessons.
Here's an example of a L6 along with his website. He's a country boy from Georgia that from what I can gather his son put him in front of the camera and said 'pick it pa... not much charisma on the YT videos, but a good man once you get into his lessons.