Pick a worthy Open Source project. Something you're passionate about. Bring your laptop or whatever resources you need to contribute to the project.
Not sure where to start? Try this list of open source projects open to beginners. https://github.com/showcases/great-for-new-contributors
7-9 Do something to contribute!
9-10 Stick around and socialize. We'd love to hear what your project is all about.
This meetup is free and open to everyone.