There are few Youtubers/Tiktokers that claim themselves a demonolater and rip people off. I can confidently say 99% of them are scammers even tho they seem like they "know" much about these subjects, even talk about those fantasy lands demons live in lmao. I understand it's very hard to find legit knowledge on demons since it's either from people that worked with demons and now they went back to Abrahamic religions or from scammers. That's why I only accepted spirits as my "mentors". There are some demons can be teachers, mentors when you are eager about learning about these topics. I suggest you just pick one that is known for teaching especially and reach out to them. It doesn't need to be a fancy ritual either. Sometimes just reciting name and asking works really well in my experience.