This document provides advice for participating in Google Summer of Code (GSOC). It recommends selecting a suitable open source project early, integrating into the project community before applying, and building relationships. It emphasizes communicating professionally, working hard during the program, and seeing GSOC as an opportunity beyond the summer. The document advises applicants to find a mentor, spell check their proposals, and develop strong coding and soft skills. Overall it presents GSOC as a chance to gain job opportunities and recommendations through contributing to open source.