I have just started with Schoder and Horrigan. I have no previous experience of Latin or of declensions & cases. I am now stuck at lesson 6, paragraph 19. Two particular questions:
1) Why is απο (away from, from) GEN., whereas επι (to, towards) is ACC. They would appear to be the same form, only the direction of movement changing.
2) επι can be 'upon' (GEN.), 'on, at, beside' (DAT) or 'to, towards' (ACC). ...