The free-to-attend Android developer event at Apps World North America on February 7-8 in San Francisco is all set to feature various leading Android developers, authors, evangelists and operators divulging their expertise on all things Droid. Sponsored by Barnes & Noble, the Android developer conference runs on both days of Apps World and will be of interest to anyone building apps on the Android OS. Highlights of the day one track will include expert opinion from James Steele, author of The Android Developer’s Cookbook on how to create the optimal Android experience, and Tom Chavez, NOOK Developer Evangelist for track sponsors Barnes & Noble on how to quickly monetise on the NOOK bookstore. The second day of the Android developer conference sees discussions on exploring cross platform dev tools, as well as insight from Donn Felker, author of Android Tablet Application Development for Dummies, and representatives from Facebook, Microsoft and VisionMobile. The OS market has long since been considered a two horse race, but plenty of evidence suggests Android is pulling ahead, with recent research from MBA Online confirming that 1.3m Android devices are activated each day compared to 515,000 iDevices. To find out how to register for the free-to-attend Android developer event, visit here.