Using video material in Blender, integrating video with 3D

Hello! I am writing to ask for advice about integrating video material to Blender. I have been previously working mostly with photo and video mediums and am now curious about how I could somehow expand this material with Blender. If anyone could recommend some tutorials I would very much appreciate it. Thank you!

Would help if you could tell us what area you are most interested in, Video in 3d scene or 3d into Video…video editing in Blender, tracking video, etc.

Start with this one and check the recommendations on the Right scrolling section for many more…