1. You can enter a patent office or a law firm to be a patent agent. Of course, you must first be a patent engineer or agent assistant and you can learn. There are many books, but you still need practice to use them.
2. You can work as a sales consultant in an intellectual property agency. There will be relevant training. Just memorize the relevant content and be able to reply to the customer. Many of these positions include not only patents, but also trademarks and other intellectual property rights.