To set up and install your HP DeskJet 3755 printer, first unbox it and remove all packing materials. Plug it into a power source, turn it on, and follow the on-screen prompts to set your language and preferences. Install the ink cartridges, load paper into the tray, and align the cartridges if prompted. Download the HP Smart app or go to [123.hp.com/dj3755](https://123.hp.com/dj3755) ... https://123hp-setup-com.us/blog/hp-deskjet-3755-printer/