I can't deletting files in the iPod 7G, how formating?

Question

I'm tired of this crap, I try to delete and instead what I do is worsen the situation, please tell me or send me a video of how to format my iPod 7G

Answer 1

After completing the Restore, the best way to load content on the iPod is through automatic syncing.
Connect the iPod and select it in the sidebar, under DEVICES.  Over to the right, there is a row of "tabs" (starting with Summary).  Click on Music there.  This is the Music tab, where you tell iTunes how to sync your iPod with songs.
Check the box for Sync Music.  If your entire iTunes music library can fit on your iPod, you can choose to sync Entire music library.  Then, everything in your iTunes music library, including playlists, syncs to your iPod.  Click Apply and you can skip the next three paragraphs.
Otherwise, you can choose to sync Select playlists, artists, albums, and genres.  One way to set this up, if you want to keep it simple, is to create a new regular playlist in iTunes.  From your iTunes music library, put ALL songs you want on the iPod on that playlist.  Back on the Music tab, find and checkmark that one playlist under Playlists.
When you click Apply, iTunes loads the iPod with your selection on the Music tab, which in this case are the songs on that playlist.  Going forward, when you want to change the songs on the iPod, just update that "iPod songs" playlist (add and remove songs).  The next time you connect the iPod, or click the Sync button, your changes automatically sync to the iPod. 
You can add more playlists to your selection on the Music tab, and also select specific artists, albums, and/or genres. The concept here is NOT to manage the iPod directly and manually.  Instead, you manage your iTunes library and settings on the Music tab, and let iTunes handle the iPod.
NOTE:  There are other "tabs" next to the Summary and Music tabs.  Those tabs are for setting up other types of iTunes content for automatic syncing to the iPod.