First off, I need to specify that I'm a newbie when it comes to networks. I know how to set static IPs, reroute ports, and do (basic) configuration of WiFi networks.
I would like to make a private network in my home for my own computers/phones (so both Ethernet and WiFi are required), while keeping a public network (using my ISP's box and its integrated WiFi) for guests. This is made to ensure the files shared in my private network are not discoverable for anyone tempted to snoop around. And obviously, the computers in the private network need Internet access.
Is what I'm thinking doable ? If yes, do I need a specific router (I haven't bought it yet) ? And how do I need to configure my network so that the computers in the public network can't see those in the private one ?
Thanks everyone for your help !