Well the first step would be to decide which router software you would like to use. There are a number of feature rich and secure opensource router software to

Well the first step would be to decide which router software you would like to use. There are a number of feature rich and secure opensource router software to choose from DDWRT/VyOS/pfsense etc. I would recommend pfsense. Once you choose your preferred OS, search online for some tutorials on stackoverflow. Alternatively, you can always stick a firewall in between your home network and your netgear, and do your filtering on that.