You can browse quickly to last/next week by using key 1 and 3, last/next month by using key 4 and 6, and last/next year with key 7 and 9
When you copy an appointment it asks you to which date
and thats a bitch if you don't know, but if you press the
options button you get the calendar view and can just point&click
on the correct day. If you press C you go to today