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Blender 2.8X - Coronavirus scene
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*This tutorial is for those who knows the basic Blender interface
  1. Blender Mesh Modelling
    - model a coronavirus
  2. Blender's Principled BSDF Shader
    - Use custom shader nodes
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Mesh Modelling
1. Rename the cube to 'Virus'.  Then choose the "Modifier Properties" tab and Add a "SubD Surface" modifier.
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2. Input "2" for both Render and Viewport subdivision levels. Then apply once more a "SubD Surface" modifier.
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3. Switch to "Edit Mode" and use "Face selection", then hit "A" key to highlight all faces. Goto "Select" menu and choose "Checker Deselect" to deselect every alternative faces. *You might need to alter some selection manually.
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4. Apply "Inset Faces" and adjust the "Thickness" and "Depth" parameters alike the following image on the right.
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5. Switch the "Transformation Orientations" to "Normal" and the "Transform Pivot Point" to "Individual Origins". Then apply an "Extrude Individual" manipulator and offset the "local translate-Z" parameter to something alike the image underneath.
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6. Apply another "Extrude Individual" and offset the local Translate-Z once more to something alike the image on the right.
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7. Apply a third "Extrude Individual" and then hold "S" key and Drag to scale up the newly created faces.
Then once more apply another "Extrude Individual" to complete the spikes.
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8. Switch back to "Object Mode". R-Click and select "Shade Smooth". 
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Experiment with custom shader nodes
9. Alter the workspace and launch 2 "3D Viewports" with one using "Render Preview" mode (the bottom viewport) in order to preview the EEVEE result. Also launch a "Shader Editor" and feel free to add some custom nodes (following added a Fresnel Input, a Noise Texture, and a Voronoi Texture nodes) to the default Principled BSDF Shader. Pls. refer to the bottom image if you aim to achieve what we got in Step 10.
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10. Apply 2D effects to the rendered outcome as wish.
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