The program's interface is very intuitive, so if you know how to navigate a Mac, you'll know how to navigate iExplorer. You can erase images, add songs and movies into their corresponding folders, and even add files that you'd like to transfer to another place, as though your iOS device were a simple pendrive. But, with the help of iExplorer, you can access the inner workings of your device just like it were a normal external hard drive. Normally, when you connect one of your Apple devices to your computer, you can't access much else than your photos if you don't have iTunes installed.
Apple devices are certainly unfriendly to attempts to explore and rummage through their contents.