I know how to setup the mode of the view for a directory: sorting, the size of icons, etc... However, this gets applied only to the current directory. Whereas I want to apply them to all the directories. How can I do this?
When you're in a directory press command+J to see the View options.
Now go about setting the view options exactly how you'd like them to be. Once completed, click on the Use as Defaults button at bottom centre of the View options window. This will set your configuration as the default for all directories.