The document provides guidance for WordPress website owners using the Classic Editor to plan their budget and conversion to the Block Editor before support ends on December 31, 2021. Key points include: 1. Include a line item in the 2021 budget for converting to the Block Editor, with sub line items depending on how it has already been adopted. 2. Websites may continue working for a while after support ends but will eventually start misbehaving for unknown reasons. 3. Owners should plan page conversions, training, theme/framework/page builder evaluations, and website cleanup to avoid downtime and ensure a smooth transition. The amount of work required will depend on the individual website.