The character 使 has two pronunciations. [ㄕˇ] means to indulge, to use, or to make. [ㄕˋ] means an envoy. Here is the animation and pronunciation. Here are the steps for writing the character. Here is the evolution of 使.
使勁 [ㄕˇ ㄐㄧㄣˋ] – to exert effort
使用 [ㄕˇ ㄩㄥˋ] – to make use
For more Chinese characters, check out my other blog “來學正體中文字 | Learning Traditional Chinese Characters”.