Any time you see the 'Export' button, you will be able to export the data on screen as a csv file.
The Export button will export all the data including columns that you may have toggled off.
Click here to learn more about Toggling Columns on and off.
You can make use of the filters to export specific information. This could be fundraisers in a certain campaign, keywords, or donations within a date range date range.
Once you have filtered the data, click export, and the data will download as a CSV file.