I get worried when someone who can't read diagrams tries to mod it themselves. I always prefer the idea of hiring an experienced modder. I get clients frying a lot of expensive hardware because they wanted to try stuff themselves. Even when I started modding I sat down and learned how to read simple shematics before doing the actual mods.
To be honest, everyone has to start somewhere, and to suggest someone
not try and opt to hire someone instead is just discouraging, making it out like this is something only for the elite, and its most certainly not. Some people learn better by getting their hands dirty getting right to the work, and there are plenty of folks out there with more then capable soldering ability from doing cap repairs, etc, who simply never learned to read a schematic. There is no reason why something like having to decipher squiggly line symbols and arrows should somehow hold someone back if they otherwise have steady hands and could do the work once they are told what parts they need and where to solder. A complicated schematic is only doing one thing for the person having trouble reading or having never read a schematic, being complicated. There are better ways to share knowledge then that if you want to reach a broader audience.
Also if the duo doesn't have the expansion port maybe you should show which pin is 5v on something easy to show in a picture like the power regulator?
I am not sure what you mean here. My understanding is the Duo has the same AV port as the Duo-R with the exact same pin out. That means that per what the schematic states, 5 volts can be pulled from Pin 4 of the AV port. If it helps you understand which pin to tap it from, I have revised to include a view of the bottom of the port showing its solder points, which have been labeled for easy understanding for anyone who cant figure out which solder point goes to what pin.