This Sunday--tomorrow!--head to College Ave, where you can walk down the middle of the street, learn about community-based organizations, listen to music, watch little ones gleefully hop on some rides, eat street food to your heart's content, and learn about what the Rockridge Library has been up to. That's right, the very cute and very mobile Oakland Library Bike will be tooling around Rockridge's Out and About festival, displaying library materials and sporting a mobile hot