Most of the icons within Versions will display a text label when you point at them for a moment. In Browse view, you can widen the Data Status column (has three dots as the heading) to see the text labels for each status.
Repository and working copy status are shown next to the bookmarks, icons are in the browse list.
The numbers in the small badges next to the working copy bookmark show how many items have changes. A yellow badge indicates local changes in your working copy, while a blue badge indicates remote changes in the repository. Within the file listing, folders that contain changes are indicated by a yellow dot.
Added: File has been added to the working copy, but not committed to the repository.
Deleted: File has been deleted from the working copy, but not committed to the repository. It will be removed from the file listing once the change is committed.
Ignored: File has been explicitly marked as ignored in the working copy, or is ignored due to global-ignore setting in subversion config file.
Missing: File has been removed from the working copy outside of svn (e.g. deleted in the Finder).
Modified: File in the working copy has changes that have not been committed to the repository.