Choose report from the Dashboard drop down
Click on create new report
Select the module, please note if you are trying to export all contacts choose contacts as the module
Choose the required field and click on next to proceed
Add filters (if required) & click on Next to proceed
Name your Report & click on ‘Save Run’
Click on ‘Export As CSV’ from Action button
To run a future export simply go to the dashboard click the name of the report and then actions to the right.