For moving anything other than apps, I use File Manager Pro, from the Google Play Store. Once downloaded and opened, it will show all the files and folders on both storages on your phone, just like on your computer (my old Dell has two hard drives). You will also have the option of creating new files and folders, moving, copying, deleting, etc. The interface is quite intuitive. Your internal storage will probably show up as "sdcard," while your micro-SD card will show as "external-sd." I have the option to show hidden files for more information. BTW, unless you root your device, there will be files listed that cannot be moved or deleted. They are part of the system.