The usual way is to turn it on and connect the USB-cable. But since it's wireless, you also have to check the connection with the router.
How do i change my HP Printer status from offline to online? I have a wireless HP Printer. The computer I'm trying to have pages printed is a Windows 10.
Does anyone have a solution how I can turn my printer to the on-line status.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic