Hello
The first time I kept fish they were goldfish, and I was about ten. There was not as much good info available to a kid then and needless to say, it did not end well.
Coming back to it as a thirty year old after much drooling over beautiful aquascapes on YouTube, I'm glad there is so much more support now.
I have started off with a Betta, some golden barbs and two otocinclus. They seem happy and my dog is absolutely fascinated with these new tiny inhabitants of her house!