Conquering Git Core with Git Handsome Guy

💡 This course covers:

• Digging into Git's Internals
  An in-depth look at how Git stores and tracks data, and its inner workings.

  
  

• Complete rebase mastery
  Beyond simple usage, you will systematically learn the concept of rebasing and how to apply it in practice.

  
  

• Restoring Reflog
  Learn the principles and usage of Reflog, a powerful tool that can even help you recover accidentally deleted commits.

💡 This course has the following features:

• How Git stores and manages data,

  In other words, we will teach you the real fundamentals by explaining the internal workings of Git.

• Git has many concepts and commands,

  This lecture focuses on three key things you absolutely must know: internal structure, rebasing, and replog.

• Drawing on over 20 Git-related books, lectures by Git creator Linus Torvalds, books and lectures by GitHub co-founder Scott Chacon, and official development documentation, this guide provides a visual and easy-to-understand explanation of key concepts. Graph-based visuals are particularly helpful for understanding.

💡 Who needs this course?

• I use Git every day, but I still feel confused and unsure.

  • I am familiar with commands like commit , push , and pull , but I am afraid of unusual issues like conflicts.

• I'm just memorizing Git and using it. I don't know why it works or why it doesn't.

  • Someone who is using it by memorizing commands as if it were a subject to be memorized.

  • If you want to understand how Git works internally, but don't know where to start,

  • Someone who is always careful when using it for fear of making mistakes during team projects.

• I'm scared of rebasing or reflog, so I don't use them at all.

  • Anyone who finds Git more difficult because of the experience of losing commits due to a bad rebase.

  • I know it's a powerful feature, but I'm afraid I might make a mistake so I haven't even tried it.

  • If you look at the Git log, it looks complicated because it seems like something is tangled.

💡 If you take this course, these changes will happen

• You will understand how Git works.

• Don't panic if you make a mistake, and recover on your own.

• You won't be afraid of rebasing

  
  

• Become a trusted developer for collaboration and code reviews.

  
  

💡 My Journey from App Developer to Git Instructor

I first learned about Git in 2015. I have been using Git steadily since then, but in 2019, I wanted to understand Git more deeply. At that time, I had been using Git for 4~5 years, but I only knew the commands that I frequently used in practice, and I did not properly understand the overall structure and principles of Git. There were no problems normally, but when unexpected problems occurred, I repeatedly failed to confidently solve them. Feeling embarrassed by these repetitive situations, I decided to learn Git properly.

After I decided to study Git, I looked for several books, but I couldn't find the book I wanted. What I wanted was a book that explained the core concepts of Git in an easy and concise manner, not just explaining commands.

I decided to write such a book myself, thinking that there might be others who have the same need as I did. I consulted various materials to easily explain the core concepts of Git. These included Linus Torvalds' 2007 Google Tech Talk video introducing Git, Scott Chacon's lectures and books, GitHub co-founder and co-author of Pro Git, more than 20 Git books and lecture slides, manuals included in Git development code, Stack Overflow, etc. Whenever there was a part that was difficult to understand, I thoroughly researched it to make sure I understood it, and thought about how to convey it in an easy way.

As a result of these efforts, I published a book called “Tommy’s Git with SourceTree.” After that, I collaborated with Hackers HRD to create an online Git course. This experience gave me a vision to help people use Git more easily, and after leaving the company, I created a Git course at Udemy. I am currently working as a Git expert instructor.

Practice environment

• All exercises will be performed in a Mac terminal environment. You can follow along using the default terminal on macOS with Git installed.

• Windows or VSCode users can also practice.

• On Windows, you can do the same with Git Bash or WSL, and VSCode users can do the same with the built-in terminal.

Player Knowledge and Notes

• It would be helpful if you have experience using basic Git commands such as commit , push , and pull .

• Being able to use basic commands such as moving directories and viewing file lists in the terminal is sufficient.