Twrp gives you the ability to make complete system backups in case something goes wrong and also flash modifications to the system and access your file system. It is a custom recovery. To me, i dont have root if i dont have twrp. Twrp also gives you the ability to flash custom software such as the roms listed above which removes bloatware, gives you a more updated cleaner and/or more customizable version of android without the lg/samsung/etc skin. So your device becomes closer to stock android as it was meant to be.. i highly suggest it for this device especially, but definitely FOLLOW ALL INSTRUCTIONS closely and as soon as you flash twrp make a backup immediately. Also, format your sd back to portable before doing this.it worked, but i found out that if you switch SD cards you have to do this everytime. im still new to this, what does TWRP & those roms do? hows that different from root
It seems ur interested in this and the only way to learn is trial and error, google and read read read. Plus a little common sense. People will help you out but theyre are also not responsible for ur choice, mistakes or device.