git referencing using ^ and ~

README.md

@@ -14,9 +14,27 @@ git reset --soft      # resets #3 only
 git reset (--mixed)   # resets #3 and #2
 git reset --hard      # resets all #3, #2 and #1
 ```
+***
 ## git rebase
 ```
 git rebase <hash>     # rebase using commits's hash
 git rebase -i HEAD~n  # interactive rebase for last n commits 
 ```
+***
+## git commit referencing using ^ and ~
+```
+~n      # follows straight history in one branch
+^ = ^1  # first parent
+^n      # n parent
+^^^2    # first parent/first parent/second parent
+```
+To practice referencing checkout "merge" branch and use some command to see what commints are referenced.
+```
+git log --oneline -1 HEAD~4
+git log --oneline -1 HEAD~4^2^
+etc...
+```
+
+
+