Hi @Shervan360 ,
I think,you don't need to learn asp.net for asp.net core..net core is new frame work to create cross platform application and it is an open source.
Asp.net core is using .net core framework.
Asp.net is using completely .net framework.
You can directly learn ASP.NET Core, the following is the ASP.NET Core developer roadmap, you can learn according to your needs:
Best regards,
Lan Huang
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