Avoid cases, memorize functions very detailed but do not know how to apply to problems and understand problems but not functions
Basic mistakes in excel, you have to understand and remember.If you encounter an error and don't understand what it is, you will never be able to fix it, such as common errors: #NA, ###, #NUM! ……
Hopefully, through the useful information on the effective method of excel study, you will have your own knowledge and method for learning excel.