Complex sentence: He arrived in Puerto Rico in late October, four weeks after the start of the 1939/40 winter season, and joined the "Brujos de Guayama" (Guayama Witch Doctors).
Split into simpler sentences: He arrived in Puerto Rico in late October, four weeks after the start of the 1939/40 winter season. He joined the "Brujos de Guayama" (Guayama Witch Doctors).