That would require a few hours of chatting about many topics.
As to your own network, since you share the internet connection I'm going with not a good idea. Complicates things and may have no payoff.
If your gear has 5GHz WiFi you could use that for your own WiFi system and put everyone else on 2.4GHz.
Ok. So my family has a big house and a lot of devices on the WiFi. The issue is me being very much a tech nerd, I also have a lot of stuff on the wifi. So it is very slow not to mention the signals bad (we also do not have working wired ethernet). So to fix this I have ordered the TP-LINK TL-WDR3600 and a PowerLine Ethernet adapter set. I want to know what is the best option, do I create an access point of the current router, or is there a way I can create my own little network with the router I'm ordering with a different passcode for just my devices? I would prefer tot have my own "network" if you will, with just my stuff and a different name & password. But what is the best way.