There are some online tutors I can highly recommend - Tao of Twang, Stich Method, Daniel Serriff and a bunch more. After I retired 10 years ago I took up electric guitar again and my playing and improvising has improved leaps and bounds with help from these sources.
For right hand technique on acoustic I picked up Mark Knopfler's Done With Bonaparte off a YT tutorial with views of both hands that's given me a solid percussive move in my fingerstyle approach.