Setting up your HP Deskjet 3755 Printer for the first time is straightforward. Turn it on by plugging it into an electrical outlet. To choose your language and location, adhere to the on-screen instructions. Open the front cover to install the ink cartridges provided, ensuring they click into place. Load plain paper into the input tray. To establish a connection, either connect a USB cable or configure wireless settings through the printer's control panel or HP Smart app.