Rooting and flashing for dummies

I want to root and flash my G3 but I don't know a lot of the lingo. Back when I did it to my s3 it was just a few clicks. Can someone point me to a walk through that doesnt start from the middle?



I am hoping that a new rom will solve my two major problems : the wifi not staying connected to my gopro, and the phone corrupting my gopro video files when the sd card is inserted.

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