This page describes how a volunteer can write descriptions of features in plain English, but the important bit missing is hat a real volunteer will wonder first where to start. What projects are missing descriptions, and therefore my work would be useful? What projects DO have descriptions already, and therefore I can just forget about them?
Without this, the risk of pointless duplicated work is high, and therefore many potential volunteers will just walk away silently.
Is QA/test backlog the best destination? What is the best way to browse the existing descriptions?