[rù mén]
（初步學(xué)會(huì)） cross the threshold; learn the ABC of; ushered into a subject; learn the rudiments of a subject
He has just learned the rudiments of Chinese.
他學(xué)漢語(yǔ)剛剛入門(mén)。
I don't even know the ABC of the subject yet.
我還沒(méi)入門(mén)呢。
He is the master who initiated me into the craft.
他是我的入門(mén)師傅。
To cross the threshold is not difficult, but mastery is another question.
入門(mén)不難，深造不易。
（指初級(jí)讀物； 基本知識(shí)） elementary course; ABC; guide
The ABC of Photography
《攝影入門(mén)》
Elementary English Grammar
《英語(yǔ)語(yǔ)法入門(mén)》