[BURLYZ]

I know Japanese and I know Japanese people.

There are several forms of referring to yourself in Japanese-
Watashi
Watakushi
Washi
Ore
Boku
Oira

I will start by saying that if you get confused about which one to use, only use this one:
Watakushi

Most people will appreciate that you're showing them respect by referring to yourself in such a humble manner.

Now teach me some English.