Show hidden files and delete them from OneDrive

On my One drive it says that I have used 5.7G out of 5G of space . I would like you to help know where the hidden files are that are eating up my space and delete those I have no longer use for. Where are these files and how do I delete them ? TIA JTM

go to onedrive on the web, log in and go to your recycle bin/trash on the web interface. make sure its not eating up your space