How to Extend Router Wi-Fi Range with Another Router: DIY : tipsnfreeware
How to connect one router to another to expand the network? - GeeksforGeeks
networking - Expanding wireless coverage: What are the differences between LAN to LAN and LAN to WAN when it comes to connecting two wireless routers? - Super User
How to Setup a Second Router on Your Home Network
Can I connect a second router to a switch and use the WiFi as a private network individual from the main router? - Quora
How to connect router to router - Cascading router