I have just ordered this book: https://www.amazon.com/General-Anatom...5758692&sr=1-1 Another thing I will start in february is art classes ( drawing and painting). I say this because I think that modeling/sculpting ( a realistic human) in 3D is more than only having reference, I believe that having a solid grounding in art gives you a better insight in how things should look ( training the eye and all that) and then you use reference as a guide to work along.