With the release of Blender 5.0, Eevee is no longer just a preview engine. While it's still not as powerful as Cycles for very complex scenes, like millions of polygons, large terrains, or detailed light physics, it can produce great results and has its own advantages, as shown by Gleb Alexandrov from Creative Shrimp in this clip.
If you want to learn how to create environment art, architectural visualization, characters, or animations with Eevee, Gleb has put together a video course over 7 hours long. You'll learn lighting techniques, how to use Eevee's settings effectively, and explore reflections, water, glass, ambient occlusion, and hair. The course also includes advanced topics like translucency, motion blur tricks, and more.