My brothers I am confused about this back end and front end thing

What are the languages I need to learn before I learn front end
What are the languages I need to learn b4 I learn backend to.
For me I really want to do back end .
someone said it might be hard for me cus I have little Yoruba knowledge about programing so he said I should start with backend...

You can contact me through email pls
If you can help me

s.abidoye@rocketmail.com