1) First week, you get a starter of your choice from the base set + 6 packs. Second week, same thing with starters/packs from the next set. Same thing for week 3. You can mix all of these cards together starting with week 2 if you wish. On week 4, you don't get any new starters, but you get 2 more packs from each set.
Some movie-block cards were reprinted in later sets. That's my best guess.