I am learning English

I am learning English. I want to work in some English speaking countries. My native language is Chinese, and I grew up in china. I enjoy swimming. I have corrected a lot of posts from Chinese speaking people these last few days.  No one puts a space after commas and periods.  Why?  Does the chinese language use commas?  If so, do they not put spaces?  If you would like for me to correct more of your posts, please follow me.  I can help you with speaking if you add me to skype.  My skype name is ipaycashtoday