For the most part you can listen to anything. There are exceptions for things like cell phones, but since analog cell phones are dead you are unlikely to stumble on something you can't listen to.
Be careful though, some cheap radios make it easy to accidentally transmit. A tiny burst of static when you turn it on is a transmission for which you need a license - and some radios are almost that easy to transmit.
Best is to get a license, then when your cheap radio sends a message at least you are legal to do that. Or get an expensive radio that doesn't have those quirks.
For the most part you can listen to anything. There are exceptions for things like cell phones, but since analog cell phones are dead you are unlikely to stumble on something you can't listen to.
Be careful though, some cheap radios make it easy to accidentally transmit. A tiny burst of static when you turn it on is a transmission for which you need a license - and some radios are almost that easy to transmit.
Best is to get a license, then when your cheap radio sends a message at least you are legal to do that. Or get an expensive radio that doesn't have those quirks.
Totally fine, listen away!