[G2 Q&A, Help & Troubleshooting] diogofd8:
Hello.

After being 2 years with a Galaxy Nexus, I have bought a LG G2 D802 32GB.

Well, I've managed to hard brick the device with only 2 days of use but got it back through warranty. But ever since I've been somewhat scared and doubtful of what I can and cannot do with this device.

I installed stock Lollipop via LG PC Suite (5.0.2 v30b), got it rooted and then installed TWRP via autorec. But I want to be able to flash rom and kernel among other things like I did with my good old Nexus and never got any major problem.

As of now, the performance on stock LG Lollipop is good, but everything is so bloated and I can't live with only 24 GB of storage. I also heard that there is a camera mod that allows the G2 to take slow-motion video and 4K photos so I would like to try that out.

Well, I've been searching here but everything is so confusing that I decided to only step into things when I understand everything about them and there's no risk of bricking the phone again. The Galaxy Nexus subforum is easier to get the hang of because there is only 3 versions of the phone (GSM and CDMA sprint and verizon). This one has like 7 and I kinda lose sight of what I need to check on.

TL,DR: Please check my questions below. (I put the important text bold)

http://prntscr.com/73hrp9 --> Those 3 sections... what's the main difference between them? Where should I look for roms for my device? What happens to the phone if I accidentally flash v30a stock or some custom rom for another version of the phone? Will it brick or bootloop or just some things such as network connection won't work?

I have a spigen slim armor case but the aluminium back is pretty damaged. Does anyone know if they still support the G2 in terms of acessories? I would want to replace the aluminium part of the case and maybe buy some screen protection. I know I can ask this and look for this in the acessories part but I found many topics with too much spreaded info and nothing convincing enough. What do you recommend for screen protection? iloome doesn't support the G2, I've seen the Glass-M and Ultimate Shield... Is there more options?

What can led to a brick in my device? How can I avoid it? Please don't tell me to not flash any custom rom and just stick with the stock. I want to try out new things, I just need to know where and what should I look.

I don't get the recoveries here! I have TWRP installed, but for what I've read there are more than 1 version of TWRP. They vary from the way I install it and they can be lost if I flash some kinds of roms. This doesn't happen with the Galaxy Nexus, TWRP is TWRP and CWM is CWM and stock recovery is stock recovery. What really happens in the G2 and what kind of recovery should I have to always have a anti brick backup plan?

What about the camera mod? Can I use it with stock lollipop? Can I use it with another custom roms? Do camera quality decrease with custom roms as they don't have lg software to process the images?

Well, I know the policy here at XDA is for searching and doing things ourselves as this is a developer forum and not a support forum. But as I learned what I should and should not do with my previous phone, I'm hoping to have a similar experience with this one without having to experience any more bricks and problems. That's why I'm asking before I do crap just because I didn't notice the small letters at the end of the post, or the comment #252652 of the thread of a user warning that the thing I'm doing will result in a bad experience. I'm just having some precautions and asking things directed to more experienced users who have the phone longer than me and can answer easily.