I'm french and i'm really fond of english and i would like to teach it abroad as a second language.However i don t know how to manage to do this..I heard about CELTA , or certTESOL ,but it s not really clear for me ..And my english level is medium

What can i do?Is there some french who have done this before?Who teach english abroad?

I really need your help
I m looking forward reading your answers

Thank you