The interface of Excel Online is quite simple and intuitive. Keep in mind that the latter is mandatory if you want to use the programs belonging to Office. In this case, you only need internet access and to be registered with Microsoft. Like any web application, it has a great advantage over classic programs: it can work on virtually any device. You can open all kinds of files, share them with other users, add comments, and apply the formulas you need.
The most important features of Microsoft Excel are also available in its online version.