Heya methodiusmonk,
Just to add to Jun2x's reply, the answer to your question on how to view the transferred documents/files depends on which directory you put it on. If you put in inside a custom directory/folder that you yourself created like /var/mobile/media/myowntransferred/ and the like, simply install iFile from Cydia and you can use it to view the documents and media. Another viewer app is WildEyes! but I'm not sure if it's currently still working on the current 3.x firmwares.
If you have document/media-viewing Appstore apps like QuiickOffice/DocumentsToGo/MobileStudio/FileAid/AirSharing/DropCopy/etc installed on your iphone and you want to view them using these apps, you have to transfer the files into the Appstore app's own Appstore directory inside:
/var/mobile/applications/[app's random alphanumeric foldername]/Documents/
Each Appstore app has its own randomly generated alphanumeric folder name. In most cases, they cannot share the same common directory unless the app can access the DCIM folder of the media partition. For both cases, if you used iPhone Folders to transfer them, the ownership is already under "mobile" and shouldn't cause any problem for the Appstore app to edit/manage/delete the files. If you'll be using SSH, make sure you transferred the files using SSH logged-in as mobile. Transferring them logged-in as root will not allow the Appstore app to edit/manage/delete the file. Some Cydia apps like iFile can edit files with a "root" ownership but most Cydia apps and all of the Appstore apps need the ownership of the files to be "mobile".
I hope this irons out your queries.
