My advice is to watch a video or two ahead of the one you're working on, because Lonny jumps around and references things not mentioned in previous videos which can lead to confusion. If he doesn't say to cut a wire, don't cut it. He eventually gets to everything by the end of the stripping process. I made multiple mistakes in mine.
Another bit of advice is always leave a lil bit of wire attached to each connector you remove in case you have to re-solder them back in.