In chapter 10 Harry gets to see Voldemort growing up. The importance of this chapter is for Harry to find out where Voldemort came from. Voldemorts mother amd father were mean poeple, she kept his father under a spel with a love poyion. Once this potion was gone it pretty much destroyed his family.
The readers are introduced to two new horcruxes. In this chapter Harry learns and gets hints as to what Voldemort would be using as a horcrux.