Where can I learn more about c#?

Question

I'd like to learn free.
I use c# to code in "visual studio" and "unity".

Answer 1

https://www.youtube.com/watch?v=DYkxkhEtb4g&list=PLhq7kqloVlM8KIEphyE8Honlf0TsF6UDP&index=1
good playlist here for c #

Answer 2

mva microsoft is a good place for you