To hook up an HP printer to Wi-Fi, you can either use the Wi-Fi Protected Setup (WPS) method or connect through the HP Smart app:

1. **Using WPS** (if your router and printer support it):
– Press and hold the Wireless button on the printer until the light blinks.
– Then press the WPS button on your router for 3-5 seconds.
– The printer will connect automatically without needing a password or computer[1].

2. **Using the HP Smart App** (recommended for easier setup):
– Turn on the printer and ensure it’s ready.
– Install the HP Smart app on your phone or computer and open it.
– Add your printer in the app, select your Wi-Fi network, and enter the password.
– Follow prompts to complete connection; the printer’s Wi-Fi light will stop blinking once connected[2][4].

Alternatively, you can go through the printer’s control panel network settings to select and join your Wi-Fi network by entering the password manually[3].

The WPS method is quick and does not require entering a password, but not all routers/printers support it. The app method provides a guided setup and works on most HP wireless printers and mobile devices[1][2][4].