I try to write )), how to start learning?

嗨，如何開始學習中國文?
是否有可能從頭開始學習中國人的(什麼??) 嗎？

↑/*I don't understand what's you mean? Try to give more word*/

Ans : Yes, better late than never  :)

I try to write )), how to start learning?

嗨， 如何開始學習中國 中文？
是否有可能從頭開始跟學習中國人嗎学习？/是否有可能重新开始跟中文老师学习？

I try to write )), how to start learning?

嗨 如何開始學習中文？

是否有可能從頭開始學習中國人嗎？(not sure what you mean here.  Are you trying to say - Is it possible to start studying Chinese from the beginning with a Chinese teacher?) 能不能和中文老师从头开始学习？