No matter how many times you read something or do something, things can go wrong at no fault of the user. A tool can error out, something can lock up, or an sd card could die while something is flashing. A good example is when the guide for otp was just starting out there was a script. It had an error in it that caused a few bricks, it was caught and fixed fairly fast, but some users still bricked. That was no fault of theirs.I've been soft-modding consoles since all the way back in the NDS days starting with FLASHME and I've never ever bricked a console to this very day.
Thats because when I am following tutorials, I read it once, and then I read it again, and then I read it a third time and if I cant remember all the steps without looking at the tutorial, I will read it a fourth time.
It's worked pretty good for me so far!