Hello! Welcome to Aquarium Advice!
Just be really careful with your 10g, since the water volume is smaller, it will be easier to make mistakes. There aren't a whole ton of fish options available, but there are some great nano choices like Clown Gobies and some Blennies.
Before you do anything, you will need to cycle your tank, I recommend doing that fishless. Be careful if you use pure ammonia because if you are not careful, it can be harmful to you! Here is a link to fishless cycling.
The (almost) Complete Guide and FAQ to Fishless Cycling
Also, take the advice in my signature!