how can I find my printer to print?

When you are where something can be printed - such as a web page, pages document or notes (among others) look for the little box with the arrow poking straight out. Tap on that and find Print.

THen follow the dialogue boxes to choose your printer and print

To use air print the printer must be air print capable and on the same wifi network as your ipad.

If your printer isn’t an AirPrint capable printer, you aren’t going to see it in the list of printers.

If your printer is not air print enabled but is a wifi printer then you can look to see if the printer manufacturer has an app you can use, or there are third party printing apps you can use as well.