Providing personal information to a stranger is NEVER a good idea. They might be really friendly and interested in you but sometimes they might use that information to harm you.
You should never share anything personal about yourself online... you wouldn't tell a stranger in the street, so don't do it online. Information like where you go to school, where you live, what your hobbies and interests are should never be shared online.
You have made a good decision, now you should tell a responsible adult what happened. That may be your Mum, Dad or Guardian.
You can always contact the Police on 101 if you have any concerns you want to talk about. We can help you and keep you safe.
In an emergency ALWAYS dial 999.