add first version

README.md

+## 1. What and Why Git
+
+#### Exercise:
+- say what you think git is and where did you see/use it
+
+#### Concept:
+- version control
+- share with team
+
+## 2. Create repository
+
+#### Exercise:
+- Create on gitlab/github
+- Create in a folder on your computer
+
+#### Concept:
+- Every git repository is independant
+
+#### Command:
+- mkdir my_project
+- git init
+
+## 3. Create file in ui
+
+#### Exercice:
+- create a file called first_file.txt in the ui
+- add content in this file, like "hello world"
+
+#### Concept
+- commit
+- history
+
+## 4. Link repository
+
+#### Exercise:
+- add a remote in you git folder on your computer
+
+#### Concept:
+- get content and modification
+
+#### Command
+- git remote
+- git pull
+
+## 5. Create file on your computer
+
+#### Exercice:
+- create a file called second_file.txt in my_project folder
+- add content in this file, like "I love linux"
+
+#### Concept:
+- local modification
+- commit message
+
+#### Command:
+- git add
+- git status
+- git commit
+
+## 6. Report modification on Gitlab/Github
+
+#### Exercise:
+- Push your local modification on remote
+
+#### Concept
+- compare history
+
+#### Command:
+- git push
+- git status
+- git log
+
+## 7. Pause 5 minutes
+
+## 8. Create Branch
+
+#### Exercise:
+- create a local branch my_first_branch
+- Modify a file
+- Push the branch on github/gitlab
+
+#### Concept:
+- branch tree
+- best practice (master/main as ref, branch for bugfix/feature)
+
+#### Command:
+- git checkout
+- git commit
+- git push
+
+## 9. Create Merge Request
+
+#### Exercise:
+- in gitlab/github create a merge request for my_first_branch
+- wait for comment on other person merge request
+- get local modif after merge
+
+#### Concept:
+- code review
+- merge
+
+#### Command:
+- git fetch
+- git merge
+
+## 10. Get existing repository
+
+#### Exercise:
+- Fork repository in gitlab/github
+- Get a local copy
+
+#### Concept:
+- fork
+
+#### Command:
+- git clone
+- git remote
+
+## 11. Propose change
+
+#### Exercise:
+- Create a Local Branch
+- Add a file your_firstname.txt with content like "I love git"
+- Push on your forked repository
+- Create a Merge Request
+
+#### Concept:
+- share work
+
+#### Comand:
+- git checkout
+- git add
+- git commit
+- git push
+
+## 12. Update your fork
+
+#### Exercise:
+- Update your forked repositiory
+
+#### Concept:
+- keep master/main clean
+
+#### Command:
+- git pull
+- git push
+
+## 13. Pause 5 minutes
+
+## 14. Bonus if enought time
+
+## Concept:
+- work branch
+- rebase/reset