There are three software programs available that can program the PRO-197. They are
Win500,
ARC500 and
PSREdit500. They all come with a 30 day free trial. You would also need the Radio Shack 20-546 Programming Cable which allows you to connect your scanner to your computer.
Programming with software is much easier and faster than programming manually, However, if you want to learn how to program it manually, there are some videos on YouTube that can help. When searching YouTube you can search for any of these scanners (they're all programmed identically)... PRO-106, PRO-197, PRO-651, PRO-652, PSR-500 or PSR-600.
For example, here is a video on how to program a Conventional Frequency:
https://www.youtube.com/watch?v=xt6PexxD1Rs
And here is another video for programming a Trunked System:
https://www.youtube.com/watch?v=0FVdanCy-pM
Hope this helps.