The One Drive is best used by accessing it from a browser (Chrome, Firefox, IE, etc.) Here are the steps for accessing and editing from a browser:
You are now at the web portal that reflects the same files as the local one drive files. In the main folder window you can navigate to folders and files. Some office files and be viewed and edited online. Files that can be edited are:
Some files can be viewed but not edited like:
Some files can NOT be viwed or edited such as:
There are many other file formats that can fall into one of these three categories, but the above are the main ones.
To view or edit files: