An ocarina tab tells you which holes to cover for each note, so you can play a song without reading sheet music. Tabs come in two common forms, and this site shows both: fingering diagrams and letter notes.
A fingering diagram is a small drawing of the ocarina with each hole either filled in, meaning covered, or left empty, meaning open. A half-filled hole is half covered. You read the drawings left to right like words on a page, playing one note per drawing.
On this site the 12-hole is drawn from above with the mouthpiece toward you. The two large holes near the lower edge are the thumb holes underneath, drawn as if you could see through the body.
The second form is letter notes: the note names written out, such as C D E F G. Each diagram on this site is labelled with its letter and a number, like C5 or A4. The number is the octave, so C5 is the C one octave above C4. A # means sharp and a b means flat; here they come after the number, so C5# is the C sharp just above C5.
Each line of a tab is usually one musical phrase, and the end of a line is a good place to breathe.
What tabs don't show is rhythm. They tell you the notes in order, not how long to hold each one. That is why tabs work best for songs you already know by ear. For a song you don't know, press play on the tab to hear it, or listen to a recording first and hum along before you pick up the ocarina.
Pendant tabs work the same way, with fewer holes in each drawing. Any tab here can be shown for a 6-hole or 4-hole pendant: pick your ocarina on the tab and the diagrams are redrawn, moved into the pendant's range if the song needs it.
Hot Cross Buns uses three notes, Ode to Joy moves mostly by step, and Zelda's Lullaby is the first song Link learns. Here is how each one starts.
Opening notes: B4 A4 G4 B4 A4 G4 G4 G4. As letters, phrase by phrase: B A G B A G, G G G G A A A A B A G.
Opening notes: B4 B4 C5 D5 D5 C5 B4 A4. As letters, phrase by phrase: B B C D D C B A, G G A B B A A.
Opening notes: B4 D5 A4 B4 D5 A4 B4 D5. As letters, phrase by phrase: B D A B D A.