Currently there is no way to rearrange bookmarks and add them to folders through the use of keyboard only. Right now, this is only accessible through the use of drag and drop. My proposal would be to add "Move bookmark" to the more actions button menu for each bookmark, which would then open a piece of UI that would allow you to choose a folder or sub folder (similar to moving docs into folders in Google Drive). Thoughts on the best way to move this forward?