Thanks!
I'd recommend @SerpaDesign on YouTube as a great source of info on terrariums - he's got quite a few videos that cover this, but here's one to start: https://www.youtube.com/watch?v=7Lg4tzkHgVo&t=1s&ab_channel=....
The main thing to keep in mind is that terrariums are high-humidity environments, so plants like mosses, ferns, and orchids will do well. Plants that prefer a dryer climate like succulents and cacti will not do well.
Another consideration is lighting - some plants want more, some want less. This terrarium is capable of fairly high light output, but can also be set to any level you want. However, you'll want to select plants that want a similar amount of light so they can co-exist with the same light settings.