あ What word is the best when learning English first ?

Well, you need to learn a lot of words in English. The first ones being Hello and Good-bye. Secondly, learning WHO, WHAT, WHEN, WHERE, WHY, and HOW also help you in the long run to learning English. It is so easy of course when learning any foreign language, to learn the bad words first. Why that is, I don't know. But you should also get you some pen pal who speak English as a first language. They can help you when it comes to writing papers, and such.