It looks like you're looking for a quick way to dive into the Warrior Cats series! 🐾
The fan community is very active in helping new readers find their way through the complex chronology.
As for the availability of the Warrior Cats books in PDF format on Google Drive, I couldn't find a single, comprehensive link that hosts all volumes. However, some fans and enthusiasts may have shared individual books or collections on Google Drive or other file-sharing platforms.