Adds informations on git commands

Readme.md

@@ -12,6 +12,7 @@
 ## Remote Execution
 ![Remote Execution](img/Remote_execution.png)
 
+
 ## Basic commands
 =================
 
@@ -77,6 +78,62 @@ Date:   Thu Apr 1 12:11:34 2021 +0200
     First Commit
 ```
 
+## SHARE & UPDATE
+### Retrieving updates from another repository and updating local repos
+=================================
+
+add a git URL as an alias
+
+>git remote add [alias] [url]
+
+fetch down all the branches from that Git remote
+
+>git fetch [alias]
+
+merge a remote branch into your current branch to bring it up to date
+>git merge [alias]/[branch]
+
+
+Transmit local branch commits to the remote repository branch
+
+>git push [alias] [branch]
+
+>git pull
+
+fetch and merge any commits from the tracking remote branch
+
+
+## BRANCH & MERGE
+### Isolating work in branches, changing context, and integrating changes
+
+![Remote Execution](img/Branching.png)
+
+>git branch
+
+list your branches. a * will appear next to the currently active branch
+
+>git branch [branch-name]
+
+create a new branch at the current commit
+
+>git checkout
+
+switch to another branch and check it out into your working directory
+
+>git checkout -b|-B <new_branch> [<start point>]
+
+Specifying -b causes a new branch to be created as if git-branch(1) were called and then checked out. 
+
+If -B is given, <new_branch> is created if it doesn’t exist; otherwise, it is reset. This is the transactional equivalent of
+
+>git merge [branch]
+
+merge the specified branch’s history into the current one
+
+>git log
+
+show all commits in the current branch’s history
+
 ## TRACKING PATH CHANGES
 ### Versioning file removes and path changes
 =================================
@@ -93,9 +150,6 @@ Show all commit logs with indication of any paths that moved
 
 >git log --stat -M
 
-## SHARE & UPDATE
-### Retrieving updates from another repository and updating local repos
-=================================
 
 ### History
 ```bash