Eevee works different than Cycles, but not by much, it’s just that Eevee fakes everything. Lamps are the same, sun lamp, spot lamp, etc, they emit light no matter the render engine, but Eevee uses a different method, just like JL explains. So try to think of it same as you do for Cycles, but Eevee is like a hacked version and it makes it faster to render in real time.
But it’s impossible for us to condense Eevee in a single post here, if you don’t understand anything, don’t be afraid to go back and watch several times, while you put it to practice with Blender open, trying stuff out.
Basically Cycles does everything for you, you don’t have to do much, but in Eevee you have control of settings and it’s more technical. Things that Cycles do for you for free, you have to tell Eevee to do them for you. Such as shadows, Ambient Occlusion, reflections, bounce lighting, etc.
