G4 and C5

The treble clef is also called the G clef: its curl wraps around the second line, and the note on that line is G4. Every time you see the clef, you already know one note.

C5 sits in the third space, right in the middle of the staff. G4 and C5 split the staff into halves you can see at a glance.

Name each note as fast as you can. There is no counting from the bottom here: you either see it, or you look at where it sits relative to G4 and C5.