Lesson 1 of 8
How Git works
@meirrosenschein invited you
8 lessons · Novice
About this study
“How Git works” is a free, 8-lesson study at novice, created with soclever, a personal AI teacher. Each lesson takes a few minutes and ends with a check-in question; finish the curriculum and you can take a certificate test to earn a diploma. Starting is free once you sign in — or generate your own study on any topic. Shared by @meirrosenschein.
What you'll learn
- What Git Is and Why. You're working on a group project, and three people are editing the same document. Person A adds a section on Monday. Person B deletes a paragraph on Tuesday, not realizing Person…
- Commits and Version History. You're three hours into editing a document when your coworker asks, "What did that paragraph say before you changed it?" You freeze. You don't know. You overwrote it. This is why…
- Branches and Merging Essentials. Your team is building a website. One person needs to redesign the homepage while another fixes bugs in the checkout process. If they both edit the same files at once, chaos…
- Git's DAG and Object Model. You save a file called essay.txt. Git doesn't store the file itself—it stores a snapshot of what's inside it. That snapshot gets hashed (run through a mathematical function that…
Questions this study answers
- What problem does Git solve that you'd face if three people edited the same file without it?
- If you commit your work twice—once after writing step 1 and once after step 2—what can you do if step 2 turns out to be wrong?
- Why would you create a separate branch instead of making all your changes directly on the main branch?
- Why does changing a single character in a file force Git to create a completely different hash for that commit and all commits after it?
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