It does not appear that the rest of Deuteronomy applies to me, either. Everything is directed to the Jews of that time. There's a lot of stoning called for, including stoning to death of rape victims who are raped within the confines of a town. I don't believe God sanctioned this and reckon this was just a preference of Moses or the author pretending to speak through Moses.
There's still no afterlife or Satan. If Israel follows the laws, it will prosper. Otherwise it won't. It will be blessed or cursed, as the case may be, depending on whether it abides by the law and eschews other gods. Reward and punishment are in this life, and the idea of the next life doesn't come up.
So much for the first five books of the OT. Unless they come up later, I can forget about them.