Mods - if this is the wrong place for this, feel free to move...... Can't say enough about all the great people here on the forums and all that I've learned about the Droid. If this were a computer, I've have no problem changing things and not worrying about mistakes, I have a number of computers to fall back on should something not go as planned. However, when it comes to phones, the majority of us only have one, and in this case, it's also my work lifeline. Mistakes are more than costly. That being said, as much as I appreciate all the advice and guidance, I'd really like to learn more about this for myself. I have a fair amount of "begginers" knowledge in the windows world and can hold my own, but linux is a mystery to me. I don't want to learn all the short cuts, I want to learn this from the ground up, or at least get a good base to work from. Some early questions: 1. What OS is Android most closely related to or based on? My understanding is Linux, but now I find there are many variations of that. 2. Terminal Emulator, just what are we emulating lol. Are busybox, android terminal emulator and abk(?) all basically the same thing, just different versions? It seems the commands for busybox are different than TE. 3. Does any one have suggestions as to how to start this quest? I looked for some books, but only found ones dealing with application developement for Android. I'm not just there yet lol. Again, thanks to everyone here that contributes, it's greatly appreciated by those of us without a background.