A MicroSD memory card and card reader like KOBO VOX eReader more storage because you can copy all your files you downloaded to your MicroSD memory card which you installed on your Tablet, or eReader. The Kobo Vox supports a MicroSD memory card which is 32GB in size like Sandisk 32GB MicroSDHC Micro SD Card with MicroSD to SD adapter & Mobilemate Reader, but you can also use smaller sized MicroSD cards like 256MB, 1GB, 2GB, 4GB, 8GB, and 16 GB. Generally, you can just use the card after you bought it since most memory cards are formatted to FAT16, or FAT32 which Google Android can read.
Some File Manager Apps like File Expert which is useful for browsing, moving, and deleting files in Android and works similar to desktop file explorers/managers like Windows explorer.
You can also turn on your Tablet, and use its USB cord to connect your Tablet to your computer, and Android will automatically ask you if you want to use your Tablet in USB storage mode, and you click OK.
Some File Manager Apps like File Expert which is useful for browsing, moving, and deleting files in Android and works similar to desktop file explorers/managers like Windows explorer.
You can also turn on your Tablet, and use its USB cord to connect your Tablet to your computer, and Android will automatically ask you if you want to use your Tablet in USB storage mode, and you click OK.