Complex sentence: After some studying with Jansz, Klinkert took over a small Javanese school that Jansz was leading and they visited close villages together on horses and he started to lead house services in the Malay language.
Split into simpler sentences: After some studying with Jansz, Klinkert took over a small Javanese school that Jansz was leading. They also visited nearby villages together on horseback where Klinkert started to lead house services in the Malay language.