Back to the Future: Ep 1 - It's About Time
Back to the Future Episode 1 It's About Time COMPLETE WALKTHROUGH
"Edit: It looks like NBC blocked my episode 5 video due to copyright reason. If you want to see my episode 5 video, you may need to watch my 7 hours video below:

Hi everyone! This is my complete walkthrough to fill in the empty space behind Episode 3, which is now complete in order. There's no need to look for another part, you can just watch it all in one place. Here's all the episodes in order.

Episode 1:
Episode 2:
Episode 3:
Episode 4:
Episode 5: