Online courses: Many websites and platforms offer online office software courses, such as Coursera, Udemy, edX and so on. These courses are usually taught by professionals and can help you learn the basic knowledge and skills of office software.
Self-study: You can learn office software by reading books, watching video tutorials and using online tutorials. For example, both Microsoft and Google provide official online tutorials and help documents that can help you learn software such as Office and G Suite.
Attend training courses: Many companies and institutions offer office software training courses, usually taught by professionals, which can help you learn advanced functions and skills of office software.
Practice: The best way to learn office software is through practice. You can install Office or G Suite software on your computer, and then try to complete some tasks, such as making spreadsheets, documents, presentations, etc.
No matter which learning method you choose, it is important to persist in learning and practice, so as to master the basic knowledge and skills of office software.