Update the project creation and add customization help pages

I have an anecdote related to this structure of instructions:

Several years ago, one of my flatmates had her computer in the living room and was trying to figure out why it wasn't working or add new parts or some such. She had it plugged in and was asking about the power supply. One of my responses was "You see that little switch that says 240v or 230v on it? Don't touch that or you'll blow it up". I got most of the way through the first sentence before there was a loud bang, and a hint of vaporized capacitor oil from the power supply. The safer phrasing would have bee "To irreparably break your power supply, switch the voltage switch to 120v while it is plugged in".