Chinese suffixes are very productive to make new words. If it were not for them, we would have to learn many new characters. The suffix 家 is one of them.
Formula of the suffix 家
a profession/industry/field + suffix 家 = a specialist or expert in this profession/industry/field.
艺术 art + 家 = 艺术家 artist
舞蹈 dance + 家 = 舞蹈家 dancer
钢琴 piano + 家 = 钢琴家 pianist
书法 calligraphy + 家 = 书法家 calligrapher
语言学 linguistics + 家 = 语言学家 linguist
历史学 history + 家 = 历史学家 historian
汉学 sinology + 家 = 汉学家 sinologist
只要你好好学习汉语,你一定会成为一名汉学家的。