This piece is a light-hearted, pedagogical work by the opera composer Carl Maria von Weber. It is distinguished by its crisp articulation and clarity of voice, typical of his writing for the keyboard.
At Henle 3 this is a late-beginner piece — comfortable hands-together playing is assumed, and musical shaping starts to matter. The main demands: Alberti-bass accompaniment kept quiet and even under the melody; precise articulation — the difference between crisp and blurred is the piece; and fine finger independence within the hand.
Beyond that, expect fast passage work that stays light and even at tempo.
Focus on the evenness of the semi-quaver runs and maintaining a consistent light touch throughout.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Divertimento assai facile (Op.38) is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 5.
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 Divertimento assai facile (Op.38) lasts about 4 minutes.
Divertimento assai facile (Op.38) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Bettlertanz, No.4, J.137 by Carl Maria von Weber, Deutscher, J.185 by Carl Maria von Weber, Dernière pensée musicale by Carl Maria von Weber — see the full similar-pieces list on this page.