simple questions

1)How can I view, immediately after opening a desired folder all subfolders at all levels incl. files in the directory tree (could be good to see also all the sizes of subfolders/files, but I would want rather too much wouldn´t I...?). I know that in some cases this view could be rather messy, but also can be very helpful, f.i. in collections of music and so on.
2) Is there any tool which can allow to copy the directory trees and export them f.i. into txt or excel file?
Thanks for help.
Regards,
Crazyman