The best thing to do in such a case is to find local help, for example a friend or family member who understands the installation guide that comes with the printer.
Maybe there’s a local service like we have here in The Netherlands where you get an IT-student to help you for a modest amount.
Anyway, just telling that you need help is not enough to get the exact help you need in a forum like this.
The HP internet site should have some online tools to help setting up or troubleshooting the printer. If that doesn’t help, try a Google search using the same key phrase as the thread title. Best wishes.
Unbox and place it on a stable surface.
Power it up and connect to your PC via USB or set up wireless.
Install ink cartridges and load paper.
Install drivers from HP website for best results.
Print a test page to ensure all’s working.
If you face issues, consult the manual or HP’s support site.