Are you working with Git regularly but still get uncomfortable and anxious when things get a little out of hand? We are going to visualize the fundamental concepts and tools so that we will have a clear image of what's going on behind the scenes and overcome our fear of Git once and for all.

The following questions will be thoroughly answered throughout the course:

• What commits actually are?

• What is the point of the staging area?

  • Why does it called "index" as well?

• What is master?

• What is origin?

• What is the difference between remote and origin?

• What is the difference between remote branches and remote-tracking branches?

• What branches actually are?

• When is it safe to delete a branch?

  • Does it happen to you, that you know you don't need a branch anymore but still hesitate to delete it?

• What is HEAD?

• What does detached HEAD mean and how to get rid of it?

• What is the difference between untracked and tracked files?

• What is the difference between tracked files themselves?

  • Have you heard of unmodified, modified and staged?

• When you merge branches, why sometimes you end up with a new commit and sometimes not?

  • Which leads to fast-forwarding vs three-way merging

• What is the difference between merge and rebase?

• What is the difference between fetch and pull?

• What is reset and what is the difference between soft, mixed, and hard reset (what actually happens behind the scene when we run these commands)?

• What is revert?

• What is the difference between revert and reset?

• What is Git's garbage collector and how does it help us?

• What is a conflict, when should I expect conflicts to happen and how to solve them?