The easiest option would probably be to use a Tinfoil shop. Install blawar's Tinfoil, add some shop repositories, and then download/install games and updates directly from your Switch in Tinfoil.
Alternatively, you can manually download game and update NSP files, and you can install them using something like TinWoo (on the Switch) and NS-USBloader (on your computer).
There are about five commonly used shops that are actively working. Some weeks ago, most/all shops had to change their hosting addresses, and users have to change these manually.Id love that, but there doessent seem to be a lot shops left. I still have tinfoil installed, but with no current shop that have the games its hard.