DevOpsDays is a grass-roots event taking place in cities all around the world. It is organized entirely by volunteers and enthusiasts of DevOps philosophies, processes, and tools who are excited to be a part of the movement.
Each day has four primary speakers presenting 30 minute talks. Presentations range from cultural ideas to specific details and experiences implementing and managing a broad spectrum of DevOps and Agile related issues. Additionally, there is a 30 minute block of IGNITE style talks (5 minute auto-advancing slides) providing a good mix of content delivered quickly and on point.
The last part of each event consists of "Open Spaces". These self-suggested and self-run discussions provide an open forum for participants to engage in deeper and meaningful conversations with their peers, presenters, and vendors. Discussions are often extensions of points and ideas brought up in early presentations, but can be about any subject interesting to a participant. If you are new to the Open Space concept you can learn more about the format here.
Also remember that some of the best learning moments can happen when you least expect them. Whether it's hallway conversations or over lunch be ready to share and learn with your fellow attendees, speakers and sponsors.
Take a look at the videos from DevOpsDays Toronto 2015 to see how the different formats work.
While you're at the conference remember that learning and understanding DevOps and the ideas and methodologies that it brings is a spiral path. You will hear ideas and concepts repeated over and over and over. Each time at a different level. There's no such thing as being "done with DevOps". Frustration and rewards are found along each level on the path.