Well, this might be a lot on your second day, but start looking at Google Assistant Relay. We can use the speech capabilities in RM to make it silently send commands that would otherwise be spoken to Google Assisant by adding the prefix [CC] to the phrase. This is a really valuable tool for controlling cloud only devices, or devices for which there is no integration for HE at this time, but Google Assistant has one.
I use it for all kinds of stuff, including a way to trigger a virtual motion sensor on the ST cloud, which then trigger Alexa routines. That's how I personally do most of my TTS messages around the house. Works great until that part of the SmartThings cloud goes down every so often.
