Microsoft's own course

 

https://www.youtube.com/playlist?list=PLdo4fOcmZ0oULFjxrOagaERVAMbmG20Xe

https://youtu.be/ZXCMBOxry8A?si=k5F0Ool7fKHUshh7

checked keyword was new to me

[pt8]

integers: integer, long and bigint...

int a = (int)42.1     

float is 32 bit,  double is 64 bit.

However this is all BS:  So as usual go for decimal... But instead of D we use M

[pt12] 

var keyword to avoid repetition when right-side strongly typed.

[pt13]

^ operator and [2..4]  oh, that's start at 2 and up to but not included 4

names = [..names."Damian"]  is a new c# feature.    <why?>