$ git checkout -b feature1
Switched to a new branch 'feature1'

Creating a new branch is quick AND simple.

$ git add readme.txt 
$ git commit -m "AND simple"
[feature1 75a857c] AND simple
 1 file changed, 1 insertion(+), 1 deletion(-)

$ git checkout master
Switched to branch 'master'
Your branch is ahead of 'origin/master' by 1 commit.

Creating a new branch is quick & simple.

$ git add readme.txt 
$ git commit -m "& simple"
[master 400b400] & simple
 1 file changed, 1 insertion(+), 1 deletion(-)

$ git merge feature1
Auto-merging readme.txt
CONFLICT (content): Merge conflict in readme.txt
Automatic merge failed; fix conflicts and then commit the result.

$ git status
# On branch master
# Your branch is ahead of 'origin/master' by 2 commits.
#
# Unmerged paths:
#   (use "git add/rm <file>..." as appropriate to mark resolution)
#
#       both modified:      readme.txt
#
no changes added to commit (use "git add" and/or "git commit -a")

Git is a distributed version control system.
Git is free software distributed under the GPL.
Git has a mutable index called stage.
Git tracks changes of files.
<<<<<<< HEAD
Creating a new branch is quick & simple.
=======
Creating a new branch is quick AND simple.
>>>>>>> feature1

Creating a new branch is quick and simple.

$ git add readme.txt 
$ git commit -m "conflict fixed"
[master 59bc1cb] conflict fixed

$ git log --graph --pretty=oneline --abbrev-commit
*   59bc1cb conflict fixed
|\
| * 75a857c AND simple
* | 400b400 & simple
|/
* fec145a branch test
...

$ git branch -d feature1
Deleted branch feature1 (was 75a857c).