Updated Git Bash and Terminal commands

There are several ways of opening up Git Bash. The one described above was a bit too long as person first opens terminal and then navigates to the current working directory and then types bash. I have added some additional smaller methods to open Git Bash and also added about the similarities in Git commands to Terminal commands in Linux os.

1-getting-started-lessons/2-github-basics/README.md

@@ -32,6 +32,9 @@ You'll also need a GitHub account, a code editor (like Visual Studio Code), and
 
 Navigate to [github.com](https://github.com/) and create an account if you haven't already, or log in and fill out your profile. 
 
+Note: You should also be familiar with bash commands(Linux terminal commands). The commands on Git bash are very much similar to the terminal commands.
+All the work to be done on git is done on Git Bash.
+
 ✅ GitHub isn't the only code repository in the world; there are others, but GitHub is the best known
 
 ### Preparation