Hi. Help please. Am really not a tech guy. And all of these is really new to me. I bought two of these cameras. What else do I need to install them at home? What app do I need to download on my phone /pc?. I boght this, but am having trouble setting them up together. Not sure it it's the right thing. Netgear GS308EP-100PES (8Ports) https://www.digitec.ch/en/s1/product/netgear-gs308ep-100pes-8ports-network-switches-14337999?supplier=406802