Re: How to get started with Selective Sync

 Here's what I get when I click on "Select folders". There are no folders to select though. I guess that I need to add folders to my dropbox folder to sync them.

Yes, of course. Since your account is new one and there is no even one folder yet, that's why that panel is empty - there only folders appear.

By the way everything syncs by default (including folders - they will appear selected). If you want to remove some, you can deselect them, so will be available only in you web browser and no any local space engaged (no even as placeholders only). Whenever/if needed, you may select them back.