Welcome, ~daytrick!
If you are looking to get a feel for what Geminispace and Gemtext have to offer, I'd recommend that you take a look at Astrobotany. It's a fun game capsule that does a good job of showing off a wide range of Gemtext features.
Thanks! I've checked out Astrobotany and it looks super fun but I haven't managed to figure out the client certificate stuff out yet, I'll take a longer look soon :)