Google Earth: Campo to Warner Springs, CA
Thanks to Steven Veldt for making this google earth view of the trail that covers section A. On his channel, he has the entire PCT and also other trails. It gives you some perspective of the layout of the land for Section A
Marmalade Outdoors put out this video below covering section A broken down into multiple videos:
I just discovered his channel on YouTube and he hiked the PCT in 2019 and from living near the start of the PCT, he has section hiked the A section many times.