Struggle with git commands

While learning html from freeCodeCamp i began to study git commands. git command has key concepts such as local and remote repository, branch, version control.The commands are always entered inside a terminal. Today is the first time working inside the terminal. For windows the terminal can be either command prompt or power shell. Even a visual studio code has a terminal inside it. Even though I managed to create a local repository I’m struggling to integrate with the remote repository in my GitHub account.