I just finished watching qbertaddict's video on how to install apps and games on the Zero. I have a couple questions. 1. Where do you find files with .opk format??? All the things are In a different format. 2. How do you install emulators on the internal sd card? Where do they go? 3. How do you install roms? NOTE: I am not asking anyone to link me where to get roms, I am simply asking how they are installed onto the Zero. Videos and tutorials step by step would be nice.