If so, I'm afraid you'll be disappointed to ask this question.
Simple notation is easier than staff notation. If you want to learn music, you must learn to read the staff.
The staff is composed of five elements as upstairs said, but I want to correct a small mistake upstairs. Notes are not only between straight lines, but also on straight lines (there are also ups and downs and beats). The notation consists of 1234567 plus rising and falling phonetic symbols and beats (such as 1/4 beats, 3/4 beats, etc.). Note: the rising and falling phonetic symbols and beats depend on a song.
If you want to learn music, you'd better ask a professional teacher to take you.