Complex sentence: He studied law in addition to his theological studies at the Jagiellonian University and in 1925 was one of the founders of "Praetoria" in Krakow; he served as its editor from 1925 to 1926.
Split into simpler sentences: He studied law in addition to his theological studies at the Jagiellonian University, and in 1925 was one of the founders of "Praetoria" in Krakow. He served as its editor from 1925 to 1926.