You want to join? Add your name and/or your sprint to the sprints planning document:
Code sprints are a great opportunity to work together on certain projects. But it's not only coding, you can design, style, patch, document,... it depends on your interest and skills as well as the available tasks. Even though we're focussed on creating great software, there will be enough space for questions or to show newbies the world of sprinting ;-) We start each day at 9am and have to leave at 7:30pm. After that we go for food, exact schedules depend on teams, hunger, etc.
Read more about sprints on drupal.org: Code Sprints
The Code sprints will take place at Hubert Burda Media, which is the driving force behind the Thunder distribution. As always in Munich it is probably the easiest if you go there by public transport: underground U4 untill final destination "Arabellapark", staircase Rosenkavalierplatz or by suburban train S8 until "Daglfing" an then go by bus 87 untill Arabellapark. You can find detailed directions on the website of Burda: Directions