This is a pedagogical work written in the style of an 18th-century two-part invention. It relies on imitative counterpoint between the left and right hands, demanding clean voice leading.
Achieving perfect independence between the two voices while maintaining a steady pulse is the essential technical goal.
Comparable difficulty and character — good candidates for what to learn next.
Bob Hada (Schoolspianist246): Invention in D Minor is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 6.
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 Bob Hada (Schoolspianist246): Invention in D Minor lasts about 2 minutes.
Bob Hada (Schoolspianist246): Invention in D Minor 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 2020 Grande Finale by Robert Thomas Hada, 2020 Grande Finale (Reprise New Years To Come) by Robert Thomas Hada, Allegro in D major by Johann Philipp Kirnberger — see the full similar-pieces list on this page.