Hello everybody.  I am learning English now, so, I am think an speak English-speaking friend can help me, and I am can help him/her learn Chinese.

In most modern European languages including English, the first word in a sentence is capitalized.

In English, the names of languages are capitalized, as are demonyms like Englishman, Arab.

Do not put a space before a comma, but put one after.

Do you see why you say "help me" and not "help I?"  Then you also may see why you must say "help him" and not "help he."