For the staff, under the treble clef (that is, the big twist in front of a line), the next line is do, the next line is re, the first line is mi and so on.
The hollow circle is a whole note, four beats; There is a vertical line on the hollow circle, which is a binary note of two beats; The circle of black half note is a quarter note, one beat; Add a wavy tail after the quarter note, which is an eighth note and a half beat; One more small tail is the sixteenth note, 1/4 beats.
Simple symbols are much more convenient. 1-7 means do versus si, with treble above and bass below.
Generally, a number is one beat, the lower line is half beat, and the two lines are 1/4 beat; If you drag a horizontal line behind the number, it means one beat, which means two beats.
If you know all the contents I wrote (including the postscript and rest I didn't write, as well as the ascending and descending symbols), you can search some teaching materials online for self-study. If you don't know, I suggest you find someone to teach you one-on-one, so it's hard to say clearly when posting.