Dags,
First off - the PCTA site is a great resource for preparing for a PCT through hike -https://www.pcta.org/discover-the-trail/thru-hiking-long-distance-hiking/thruhiker-faq/
What other long backpack and through hike experience do you have? Have you tried any section hikes of the PCT? How about a smaller backpacking adventure such as the Wonderland trail (around Mt. Rainier) or the JMT? These 5-25 day hikes are a good introduction to through hiking and you can get an idea if a longer through hike is really something you are ready for mentally and physically.
Facebook groups, youtube videos, books, movies, and lots of practice backpacking trips are the tools I have found most helpful. There is a lot to consider - logistics, gear, physical and mental prep, permits, and more.
Hike your own hike and best wishes for a great adventure.
