Get one or two Raspberry Pis and start experimenting. I run an ethernet cable from my router to a $10 switch. The switch connects to a desktop server, some Pis

Get one or two Raspberry Pis and start experimenting. I run an ethernet cable from my router to a $10 switch. The switch connects to a desktop server, some Pis and an external wifi point. I went from tinkering like this over the years to an Infratructure Team Lead.