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Where can I learn managing of animation or how to's in unity
You can watch YouTube tutorials (this is how I learned it);)
Brackeys has already lots of tutorial about it
Brackeys does have some tutorials on it. Unity themselves have published some videos on this.
Check out this playlist : https://www.youtube.com/playlist?list=PLX2vGYjWbI0S-LEFR59E2B347w2HbjiJv
"Dapper Dino" has some videos on it too.