I'm going to agree with he Mystichobo here, life drawing skills are invaluable! I found that I was learning different approaches to drawing and shape forming in life drawing that just can't be found in textbooks.
Though not a book, if you're working on anatomy stuff, I highly recommend looking into doing a life drawing class. I'm not a character artist, but I found they helped me a hell of a lot with basic form and figure.
what you need is 'artistic anatomy'. not gray's anatomy (no relation) :), anatomical anatomy etc. artistic anatomy deals with systems of aesthetic proportion. superficial muscle groups. weight and balance. how to make the human form 'look good'. none of that is covered in general anatomy books. all those topics are covered…
yes your quite right. digital techniques are very important and you do need to get up to date training for sculpting, texturing etc. i think you need to do both then. you need to get your drawing and sculpting skills in order and get anatomy books and solid reference from the masters. you also need to get technical dvds…
i sugest you buy any and all books available by George Bridgman. he is a true 20th century master. [ame="http://www.amazon.com/Bridgmans-Drawing-Dover-Anatomy-Artists/dp/0486227103/ref=sr_1_3?s=books&ie=UTF8&qid=1367124823&sr=1-3&keywords=bridgman"]Bridgman's Life Drawing (Dover Anatomy for Artists): George B. Bridgman:…