Going back to school

Hi there I’m 21 and have been out of school for 5 years. I’m wanting to go to college but having a hard time on what I’m wanting to do and anxiety about actually going back and doing it. Online school is the best option for me at the moment, just need some advice on how to start the process of going back. Any advice will be a great help thank you

Edit : thank you guys for all the advice definitely made me feel more confident and comfortable about going back to school 🖤🖤