Where should I go to reinstall my printer
It's not showing up as available
Question marked as
I'm not sure if you mean you already have a printer, or if you still need to install one.
Regardless, you can to go to System Preferences > Printers & Scanners. If your printer is already in the list on the lefthand side, check to see if it's Online or Offline. If it's offline, you can try resetting it. (I'm assuming the power to it turned on) -Right click on the printer for context menu and there is an option to Reset Printing System...
If you still need to install a printer, there will be no printer listed in the left windowpane. You can click on the + sign below, and another window will pop up that lets you search for available printers. Depending on the brand and type you have, you may be prompted to install software from the manufacturer. But sometimes you can just use the native printer drivers that are built into macOS. After it's done installing, you can right click on it to Set As Default Printer.
Here is an additional support article with more information: https://support.apple.com/guide/mac-help/add-a-printer-on-mac-mh14004/mac
I'll attach a couple screenshots also.