This sub-section of the Stars section of the site discusses the three main types of stars that are no longer fusing elements to create energy. What type of dead star one will become is dictated solely by its mass.
The first type is a white dwarf and is what stars like our sun will become. Also discussed on this page is the Type-1a supernovae events which happens when a white dwarf is able to accumulate extra material from a second star and explodes.
The second type is for more massive stars which will collapse down to neutron stars. Also discussed here are pulsars, which is a special type of neutron star.
The final type is a black hole, something that is an active area of theoretical research where the laws of physics that we understand start to break down.