Hey, how are you guys doing?

I am 13 years old, and I have been very interested in computers since I was three, but I have only decided to take action with this now, being persuaded by many job opportunities and profit.

I would like to open a freelancing website designed for developing. What programming languages would I need to learn, and what things would I need? Things like a domain, e-mail domain, etc. and an estimated cost.

Thank you