Link iPad to printer

You do not install a printer on the iPad. If you wish to print from an iPad, you need an AirPrint enabled printer that is connected to the same wi-fi network as your iPad. Then you can select Print in the Share box and it should connect to the AirPrint printer. If you do not have an AirPrint enabled printer, your printer manufacturer may have an app that you can download and use to allow you to print to their printer. See this, About AirPrint - Apple Support

Expanding upon ChrisJ4203’s comments...

Apple AirPrint is a driverless connection protocol - that requires a compatible Printer to be wirelessly connected to your WiFi network. A high proportion of modern printers intended for Home and SoHo environments support AirPrint.

If your printer is not compatible with AirPrint, your alternatives are limited.

Some printer manufacturers have a suitable companion App that provides Print capabilities for mobile devices, often using a web-based print service.

You might also consider connecting a non-AirPrint printer to your PC or Mac computer - and install a “helper application” that allows the computer to emulate AirPrint capabilities; one such option is Readdle Printer Pro, for which suitable software for your PC is available. A link to the PC software is included from this page:

https://readdle.com/printerpro

A further alternative is to consider installing a dedicated Print Server Appliance on your network - and connect your printer to this. One example is the Lantronix xPrintServer, although the cost of this solution may exceed that of your existing [basic] printer.

The remaining solution is to simply replace your printer with one that is AirPrint capable.