We present in this article fundamental elements that can guide us in the process of developing a possible classical electromagnetic theory. Maxwell's equations, which involve line integrals of the electric and magnetic fields, are reformulated into expressions that are almost completely symmetrical. We show that the continuity equation for current naturally arises from the reformulated Maxwell-Ampère law. Ampère's law is generalized and applied to calculate the magnetic field due to some common current distributions found in the literature, including a moving charged particle and a finite current segment. The expression for magnetic force is modified, and the cyclotron frequency of a charged particle in a uniform magnetic field is obtained in accordance with classical mechanics. The magnetic field in the spin-orbit interaction within an atom is determined from the reference frame at rest with the nucleus, which cannot be achieved with electromagnetic theory in its usual form. The force between two long current-carrying wires and a brief discussion on the interaction between two arbitrary current circuits are addressed using the reformulated laws. Next, we present a special non-material medium to correspond to the luminiferous ether, that is, a medium through which the electromagnetic wave propagates. Then, the electromagnetic interaction between two charged particles is examined. Thus, in this work, we propose basic elements to complete the classical electromagnetic theory.