There really isnt any tutorials. It sounds like you have already seen how to go about it. It is hard running wires in almost all these cars. The thicker form-fitting carpet poses a problem, you have to really lay the wires side by side instead of a bundle. Use duct tape to hold them in place. You may have to remove the seats, depending on how many wires you have and/or how thick they are. All the panels are held in REALLY good, thats what makes our cars built better than most. That is one of the main reasons I bought one. I sold/installed car audio professionally for 16+ years, and worked on everything. I figured if the car was REALLY difficult to take apart, its not going to just FALL apart over the years, therefore a really well-built car.
It has been mentioned to run wires under the car, I really dont recommend that. Its exposed too much and would corrode prematurely.
Just take your time, do it on a weekend or something where you have some time to just walk away for an hour or so. Split the wires running half down each side. Pull all the trim off carefully but firmly. These cars will fight you most of the way, so take your time. You can do it.
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