Fingering for the upper note C
For the upper C, the back hole (the thumb of the left hand) and the second front hole (the middle finger of the left hand) are covered. The first hole stays open — this is the main feature of the note, which beginners often forget.
Fingering for the upper note D
For the upper D the back hole is open too: only the second front hole is covered, with the middle finger of the left hand. The thumb stays near the hole and supports the recorder.
How to play the G – D scale
Five notes in a row — G, A, B, C, D — is already half of a scale. The move B → C is the hardest: you have to lift the index finger and lower the middle finger at the same time. Practice it separately first, slowly, making sure no extra sound slips out between the notes.