Like windows, when you download dropbox it places a folder in the library list. I'm wondering if I'm able to similarly add dropbox under "Places". Thank you in advance for your help.
There multiple alternative options:
Pressing Ctrl+D adds a bookmark to the folder you're in (tested under Ubuntu 12.04 & 13.04). For Ubuntu 14.04, use the Files application (a. k. a. Nautilus) to navigate to the folder you want bookmarked, then press Ctrl+D, the same with going to the top menu bar and selecting Bookmarks → Bookmark this location.
Select the folder that you want added to bookmarks, then go to the top menu bar and select Bookmarks → Add Bookmark.
You can add them editing by
~/.gtk-bookmarks. Say you want to add
~/Ebooksfolder under Places. Just add the following line at the end of
Try it out and let me know. Hope it helps.
To edit the actual "Places" group, edit the
~/.config/user-dirs.dirs file and add your directories in there.
The thing is, that file is automatically generated when you log-on by the
xdg-user-dirs-update program. To prevent it from overriding your changes, run the following command:
$ echo "enabled=False" > ~/.config/user-dirs.conf
For a more detailed explanation, and support for other versions of Ubuntu, see this page: http://choorucode.com/2010/07/25/how-to-add-or-remove-places-entries-in-nautilus/