CAD is a drafting board: sharp pencils, precise rulers, curve templates.
Blender is in contrast: a giant set of acrylic paints. It just does different things entirely.
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Here is something you can do today. Open up Blender, left click on the default cube. Menu->Object->Quick Effects->Quick Smoke.
Hey look, you turned something into a Physics simulation of (artistic) gas rising. Now play with settings till you are bored and/or your CPU got too hot and your room is too warm. These buttons use a ton of CPU time lol.
Hit spacebar to play the simulation.
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This is Blender. It's animation, it's art, it's imprecise. It's full of random widgets that deeply simulate colors or simple physics or do basic effects.