1. Open File Manager
2. Open Menu/Settings of File Manager by pressing Menu Button
3. Check Show Hidden File and Folder Checkbox
4. Goto SD Card create folder with name ”.data” (or any other Name you want it Should Start with "." E.g. ".foldername")
5. Open That Folder Create File Named “.nomedia” in Folder Created in Stage 4 (Important)
6. Paste all Files and Folders you want to hide in This Folder created in stage 4
7. Goto Menu/Settings by pressing Menu Button
8. UnCheck Show Hidden File and Folder Checkbox to hide folder we created so it can be safe
9. Whenever you want to see your Hidden Files and Folder Check Show Hidden File and Folder checkbox in File Manager Setting to unhide and uncheck them again to hide.
Thanks