Franz Schubert's '7 Easy Variations in G major' are charming and accessible pieces for developing pianists. They showcase Schubert's melodic gift and his ability to create delightful transformations of a simple theme.
Work on maintaining a consistent tempo and achieving a smooth, singing tone.
7 Easy Variations in G major is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 4.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of 7 Easy Variations in G major lasts about 8 minutes.
7 Easy Variations in G major is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.