Hello,

The best course of action in order to be an English language trainer would be to do TESOL or TEFL certification or degree program.

The most popular TESOL (Teaching English to Speakers of Other Languages) programs are certification programs. These are intensive programs available online as well as offline.

The international requirement for English language training is usually a TESOL or TEFL certification. The most widely recognized are the Trinity Cert-TESOL and the Cambridge CELTA certification programs.