I want to get meditation instructor certificate. My purpose is that someday, if I reach some foreign countries, currently have no job, I want to get in meditation center to get job. May be I get a job immediately, but I will try part time instructor job.
The second thing is that I am interested in spritual teaching. In internet, I found so many online courses. I have no ideas how to choose the best. Actually I want to join some school to get face to face teaching.
Can anyone show me to reach there? If there is no choice, I will choose online course. But need your ideas to know the best online course. Thank you.

Few points to consider here. A certification issues in one country might not be accepted in another country, second to work in another country.. you will need to have a legal status allowing you to work there, and third. From my own experience. Jobs are rarely open long in many other countries. And the more esoteric the field... the more difficult its going to be.

But if you have a passion for this, go for it, I'd suggest a more common field to have experience in for something to fall back on if this one isn't possible. That part is solid advice for everyone.

A certification is barely worth the paper it is written on, in some fields of study.
Meditation is one of them, a person may study for 10 years and not be certified because there is none for that teacher.

Online programs normally have almost no real value either, except to show someone if you were trying to do your own center and want to appear offiical.

Showing years of study, under known teachers would be much more helpful.