With time it can happen you have a bunch of installed apps on your Windows Phone 8 powered phone you never use anymore, I suggest you to remove them to free some of the storage.
Use the Open Browser Window behavior to open a page in new window. We will insert an image in a document, than we will set a value to the image to open new window by clicking on inserted image.
If you can't copy files that are bigger than 2 or 4 GB, usually HD movies and such, on to your USB key, it's usually due to the file system the USB key is formatted to.