How do the eastern Catholic rites celebrate Lent and Pascha?

Questions Covered:

 

37:22 - What is the difference between the Hail Mary in the eastern rites and the western rites? 

40:09 - Why are the liturgical readings different between East and West? 

47:40 - Are Byzantine Catholics required to believe in the Filioque? 

50:38 - When did the orthodox split off from the Catholic Church?