I just recently rooted my phone and would like to start changing things, but before I do that, I want to make sure I don't do anything to brick it. I've heard a lot of people talking about changing the ROM, or flashing it. I know what flashing is, but I don't know what the 'stock rom' is or any other thing to do with it. Could someone please help me understand what the ROM is or the benefits of changing it? A link to somewhere else is fine, just as long as it gives good details. Thank you in advance for your time.