Where can i learn programming logic , like connecting to internet, updating software, testing software etc?

Question

How to create online softwares

Answer 1

Depends on the language, technology stack and platform.

The short answer is that you Google and read.

Answer 2

Sololearn is the best platform to learn programming language, software development, app development, software testing andd many more.

If you want to learn basis of software testing then I will recommend this.
https://www.tatvasoft.com/outsourcing/2022/04/what-is-software-testing.html