I think I kind of get the gist of enthalpy and entropy, but i have no idea what temperature is.
Heat is an excellent example of entropy. Heat is the flow of thermal energy, it is the spreading out of thermal energy. Thermal energy is just kinetic energy on the atomic scale. If you imagine two atoms colliding, one fast and the other slow, the faster on loses energy to the slower one. Now imagine trillions of atoms constantly colliding. The faster ones are gradually slowing down as they collide with slower atoms, and the slower atoms are getting faster, until we reach thermal equilibrium, all atoms moving at the same speed. At this point, heat (thermal flow) ceases to happen.

I actually don't know what enthalpy is, but I note it's measured in joules, so I assume it's a form of heat.

What's enthalpy, mojo?