how do save the newly converted pdf's to my documents?
You may refer to the following KB doc to Save and make changes in save location for the newly converted PDF's to your Documents Saving PDFs in Adobe Acrobat and Reader Link: https://helpx.adobe.com/acrobat/using/saving-pdfs.html
You may also refer to the following KB docs to manage and work with your files stored in Adobe Document Cloud Manage and work with your files stored in Adobe Document Cloud Link: https://helpx.adobe.com/document-cloud/help/files.html and Where are my Adobe Document Cloud files? Link: https://helpx.adobe.com/document-cloud/help/manage-files.html
Hope this helps, and let us know how it goes.