The Buttler-Stubenberg-Marsch is a characteristic late-Classical era march intended for social or ceremonial performance. It is distinguished by its crisp, rhythmic character and typical functional harmonic structure of the period.
Maintain a steady, rigid pulse throughout, treating the march rhythm with strict precision.
Comparable difficulty and character — good candidates for what to learn next.
Buttler-Stubenberg-Marsch (Op.302) is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 3.
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 Buttler-Stubenberg-Marsch (Op.302) lasts about 3.5 minutes.
Buttler-Stubenberg-Marsch (Op.302) 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 Piano Sonata No. 16 in C major by Wolfgang Amadeus Mozart, Maple Leaf Rag by Scott Joplin, 'S Wonderful by George Gershwin — see the full similar-pieces list on this page.