Help, I am lost

I used to listen to scanners all the time years ago, Seems the technology has gotten a little more technical.

I'm looking to listen to Williamson county and the other local police, which from what I have read is all run on APCO-25 Trunked system? I would like to find an entry level scanner to listen in. Can anyone give me some info and point me in the right direction please. Thanks

Help, I am lost