Intrinsic, two-dimensional ferromagnetic semiconductors have long been studied for overcoming the limitations of dilute magnetic semiconductors for spintronics applications. Recently, two-dimensional honeycomb van der Waals ferromagnets have also been studied as a platform for topological spin excitations. Thus, CrSiTe3 provides a rich environment for the emergence of novel physics from various electronic and magnetic interactions. This talk will discuss the ways in which neutron scattering can be used to illuminate the nature of these interactions and the implications for future applications.