This document outlines various ways to contribute to the PostgreSQL open source database project. It discusses that PostgreSQL needs support from individuals and companies to continue developing and competing against commercial databases. Contributing provides benefits like being listed as a contributor or sponsor on PostgreSQL's website. The document then lists several contribution methods like making donations, participating in surveys, providing hardware/infrastructure, helping with documentation, answering user questions, reporting bugs, and writing code in the form of tools, extensions, or patches.