mobile

Firstly, I apologize if this has been asked. And I'm sure it has. Before we get into the " do your research" rebuttals, I have been trying to get this done for about 2 weeks now. What i'm trying to do is root my phone and install a custom recovery. This is my first LG phone ( im coming from Samsung). I am on Lollipop. I understand that I have to revert back to 12b. So as I do this, I see that we use the LG flash tool. I am having a terrible time in getting this to work even as I follow the instructions on youtube ( although im starting to wonder if these are out of date). Main Issues tend to be that they call for a .kdz file and all I find for downloading are .tot files. What is the difference here? Another Issue im running into is the fact that I cant even get signed into the toolkit. I keep getting an error message. Unable to login and what not. I'm guessing it has something to do with the .dll file? Anyway. I'm not a pro by any means, but I just feel like I should be having some rom fun by now:( Can I get anyone willing to help me further please??? Cheers ahead of time!!!!