The 13 step process for making a website called GirlGamer includes defining the target audience, creating a style guide, finalizing features and site maps, blocking out the page layout, creating wireframes, designing mockups, coding the design, adding logic and linking pages, detailing the database, programming, testing, and adding final content. The steps involve determining the audience, developing a visual style, planning site structure and features, designing page templates, building interactive prototypes, converting designs to code, integrating functionality, testing, and launching the live site.