-I recommend that you listen to as much of the video as you can, but the melody starts at 3:50 (with cellos!).
-Listen for which sections have the “melody” vs. “countermelody”
-Try to hear a few examples of how Beethoven twists/turns/changes the melody throughout the movement.
-Watch the chorus stand and begin singing at 7:50
-Also, watching Leonard Bernstein conduct is very fun.
The choral text (poem by Friedrich Schiller, translated from German), includes this passage, among many:
“Joy, your magic brings together what custom has sternly divided. All men shall become brothers.”