Congrats for your first setting up some Miners and getting them working , to be honest its not difficult to set them up.
Plug in some cables and start , the L3+ interface is also kinda easy , i would recommend not flashing the Firmeware on this Miners even there are some that gives you maybe better Hashrates.
On top of that as already written from nc50lc i would also try to get a special power supply for the miner that was developed specifically for it.

Back in the days i also tried that with an normal ATX PSU and burned it after some time.
But yeah happy Mining.