I must also agree that having video tutorials for teaching of basic programing isn't good. The reason for that is mostly the fact that when you upload your video to Youtube it gets compresed. The result is usualy a bit lower quality of the video wich makes reading text (source code demonstrated in video) a bit dificult becouse this text becomes blurry.
I do think that video tutorials could come in handy explaining graphics aproaches. For instance:
1. Explaining how isometric engine works and how it is being drawn - step by step. This could help pepole to understand how isometric engine works easier.
2. Explaining how 3D engines works. How it is being drawn (from wireframe to applying latest effects)
3. Eplaining how special effects works (shading, how shadows are being drawn, LOS - line of sight, LOD - line of detail, etc.)
I belive that all these things can be much easier explained in video tutorial than in regular one.
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