Paolo prepared himself for the job by starting the learn the Japanese language so that he can better communicate with his fellow employees and employers in Japan.
Even with English as a universal language, in Japan, their commonly used language is Japanese and not English since before English was considered a universal language. By learning the Japanese language, he can easily communicate with everyon he talks to in Japan since their first language there is Japanese.
Paolo gets to learn the Japanese language faster and interact better with his co-workers.
Paolo would tell his family about his new found friends at his workplace and how they helped him get better and faster at learning the Japanese language