A few questions from someone new WIFI

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Mikener wrote:

First I'd like to apologize for being so lame about these questions. My family has me very stressed out about keeping the WIFI up and running and I really don't have a handle on WIFI.

1. I am under the impression that the Orbi can connect at either 2.4 ghz or 5.0 ghz. My old router had me create an SSID name and then select which speed (2.4 or 5.0) to use with the SSID. I am reading the setup instructions, but I don't see how to select the connection speed. Where do I select which speed that I want to connect to or does the Orbi decide each time someone connects which speed to use?
   Yes, the Orbi and each device conduct a dialog about which WiFi features they each support and then the device chooses how to connect.
   
2. My home is 3 floors. When my ISP set everything us they put the modem and router in the basement. Moving the equipment to the first floor is an expense and a headache that I don't want to deal with for reasons too complicated to get into. On the top floor the connection speed is pretty decent on my devices, but for some reason it's terrible for my wife and daughter. I suspect it's because my devices are newer. With that in mind, am I better of with an extender like the new Nighthawk X4S Tri-Band or replacing my existing router with the Orbi system?
   An extender is likely less costly than an Orbi package (router + satellites).
   
3. When I work in my basement I have my laptop hardwired from the existing router to my laptop. I saw a video on YouTube that said you cannot hardwire the connection from the Orbi router to my laptop. Is that true?
   Any device with ethernet can be connected directly to an Orbi router that has an ethernet jack available.  I have two computers and a switch connected to my RBR50, and there are 7 devices connected to the switch.
   
4. The video that I mentioned suggested that it's simplier for someone like me to use the app instead of the web interface to perform the setup. Is that true? "Simple" is in the eye of the beholder.  Personally, I abhor the "app".  You have a laptop with ethernet.  I would use that for setup.
   

Thank you in advance and I apologize for such a long post.

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