Giacomo Gotifredo Ferrari was an influential teacher and composer whose keyboard works display a blend of Italian melodic charm and Viennese structural discipline. This set provides excellent practice for finger control.
The technical focus is on maintaining evenness in the sixteenth-note patterns throughout the variations.
Comparable difficulty and character — good candidates for what to learn next.
12 Variations for Keyboard in F major is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 5.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 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 12 Variations for Keyboard in F major lasts about 5 minutes.
12 Variations for Keyboard in F major 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 Andantino in B-flat major by Giacomo Gotifredo Ferrari, The Entertainer by Scott Joplin, 12 Variations on "Ah vous dirais-je, Maman" by Wolfgang Amadeus Mozart — see the full similar-pieces list on this page.