Before downloading from random file-sharing sites (which often contain misprinted, scanned copies with missing pages), consider these :
Even if the study says "Legato," practice it Staccato, then Portato, then Pizzicato (very short). This solidifies mechanism. pozzoli 24 studi di facile meccanismo pdf
It is often paired with other foundational methods like Czerny's Op. 636 or Op. 849 and Heller’s studies. Summary of the 24 Studies scanned copies with missing pages)