Julius Wess: Theoretische Mechanik The book is amazing, since it introduces advanced concepts like group theory and greens functions very early with very simpl

Julius Wess: Theoretische Mechanik The book is amazing, since it introduces advanced concepts like group theory and greens functions very early with very simple examples from classical mechanics. Unfortunately it is only available in german, yet: http://www.springer.com/de/book/9783540885740 http://www.springer.com/de/book/9783540885740