The first step is to find some materials for introductory study, such as patent law, detailed rules for the implementation of patent law (there are books in bookstores) and review guide (national intellectual property rights can be downloaded online, and there are too many contents, so you can read them slowly later). If you don't understand, you can go to some forums (such as Bo Pai and Si Bo) for consultation and discussion.
The second step is to learn to imitate patent writing on some patent retrieval websites (such as SOOPAT and Baiteng), pay attention to the conciseness, refinement and accuracy of the language, or buy some professional patent writing books online and learn in the process of practice;
In fact, I've taught myself almost enough here, but the difference is practice. You can go to some patent agencies to find some job opportunities, and you should ask more from your predecessors. Only by exercising in practice can I go faster and further. Wish you success! !