I treated myself to a little gift....
I'm loving this book by Amanda Brown of Spruce.
(And you have got to look at her living room that she showcases in the book, you can get a sneak peak in the book preview -- it's swoon worthy!)
My obsession with upholstery started 3 years ago when I took a class from a local community college. After that, everything else has been self taught (by trial and error), youtube, or by studying the video that I purchased from the Spruce website.