Hello everyone. I made the jump from my android Droid RAZR MAXX to the Nokia Lumia 900. I have been hacking, rooting and creating roms for android phones as long as I can remember wo I consider myself pretty cell phone savy. But I feel like a complete newbie with this new phone. My first question is what are the files called? Like android files are called .apk ? Also is there a website like 4shared to find these files? did there are any former android users here than can give me some insights that would be great. Maybe even a link to a article or video to making the transition. Thanks everyone in advance and hopefully I can be a help someday soon in answering other newbie's questions