I'm only going to be able to help in one area, ie the battery, esc, throttle stuff... I don't fly heli's nor do I use gyro's ( ie like the MicroBeast etc ).... I will cover several things within the power area... but nothing about the other stuff I don't have any experience in. I'll try to also explain a little bit of the terminology just in case you aren't familiar with it already.
First... If you saw a switch mentioned anywhere... I suspect that was in the MicroBeast's documentation, if so, the one I read through ( quickly mind you ) does show a switch as optional equipment. It isn't included nor is it needed. I didn't see a switch mentioned in the 470 documentation, but as mentioned, it was a quick read through. If that manual mentioned it, I also suspect it was talking about IF a switch exists, it probably wasn't saying there was one, they were just covering all possibilities. While I've never seen one, I've also read that some ESC's have them as well, again, I don't believe this applies in this case and they probably only mentioned it to cover all bases.
While still on that subject of supplying power... Typically on an electric model ( whether an airplane, heli, multicopter etc )... Most of them are powered on by simply plugging in the battery. There is seldom a switch involved. As a safety point, this is why you'll see everyone say to make sure your throttle is all the way down ( except the one time you are calibrating the throttle ) before you plug in your battery so the prop/rotor doesn't spin up. Battery power is provided by what is called a BEC ( battery elimination circuit ) which is often included in many of the smaller ESC's ( electronic speed controller ). The ESC is the throttle channel for an electric model and controls the speed of the motor.
While still on the subject, this time of the throttle... On a Futaba system, the throttle signal is reversed from what Spectrum ( and many other radio brands ) use. So you will likely need to check this and probably reverse the throttle channel during your initial setup.
When setting up the throttle for the first time... remove any and all props or rotors for safety purposes. The first time you setup the throttle, you will want to calibrate the throttle signal from the radio to the ESC and motor. Follow the instructions given for your ESC on how they recommend to do it. Typically you will put your throttle on the radio up on full throttle ( all the way up ), plug in the battery, then bring the throttle all of the way down and if all is well, the ESC will arm the motor so it will operate, often you will hear beeps from the motor when this happens. This can differ with different ESC's, so read the manual for the one you have. Other than going through the calibration steps, the other stock ESC settings are usually unchanged unless you have a different need or preferance on a specific setting.
Ok... where to plug that darned ESC in at... lol. Simply put, it plugs into the throttle channel on the receiver you are using. On a Futaba receiver that is typically channel 3, on a JR/Spectrum it is channel 1. The servo wiring will be one of two color combination types... a brown, red, orange... or a black, red, white. The brown or black wire is ground, the red is the positive power... and the orange or white leads are the signal wire. On the Futaba receiver, the servo plugins are "keyed" with a tab on one side to only go in one direction if you have a servo with that type of plug. On other servo plugs that are not keyed, you have to pay attention to which way you plug them into your reciever. On the Futaba reciever that tabbed side is the signal side where the orange or white wire will go to. On a JR/Spectrum, they are usually just labeled as plus, minus and signal... typically with the symbols +. - , or a ^ or similar symbol.... the ^ ( caret symbol ) is the signal side on the receiver. If you have more questions, I'd refer you to the manual for the product itself since there may be some slight differences to what I described.
Here is a basic video about hooking up an ESC ignore anything that isn't related to your setup of course but it should give you some basics to visualize and see how these are hooked up...