The treble clef
Every line of violin music opens with the same curly sign: the treble clef, or G clef. It's not a note — it's what fixes the grid. Without it, five blank lines could mean any five pitches.
It's a letter G
The clef is a stylised capital G, and its inner curl wraps the second line from the bottom — pinning that line as the note G. Specifically G4, the G that's your 3rd finger on the D string, an octave above the open G string.
You count from the anchor
"Every Good Boy Deserves Fudge" and "FACE" get you started, but they're slow — you're reciting a list. Fluent readers keep a few fixed landmarks and read everything else as a step or a skip away. The clef hands you the first one free: second line is G.
The usual mistake
Losing the anchor. The moment a note lands on a ledger line, "Every Good Boy…" runs out — but "a skip below the clef's G" still works. Reset your eye at the clef every time you start a line.
Try
Open any piece of violin music. Point at the clef, say "treble clef — second line is G", and find that G on your violin (3rd finger, D string). Do it with three different pieces.