Git terminology can be a bit misleading. Take, for example, the term
"branch". In git it has two meanings. A branch is a directed line of
commits (possibly with merges). And a branch is a label or a pointer
-assigned to a line of commits. It is important to differentiate when
-you talk about commits and when about their labels. Lines of commits
-are by itself unnamed and are usually only lengthening and merging.
+assigned to a line of commits. It is important to distinguish when you
+talk about commits and when about their labels. Lines of commits are
+by itself unnamed and are usually only lengthening and merging.
Labels, on the other hand, can be created, moved, renamed and deleted
freely.
git checkout HEAD~ README
The commands restores the contents of README file to the last but one
-commit in the current branch. By default a commit ID is simple HEAD;
+commit in the current branch. By default a commit ID is simply HEAD;
i.e. ``git checkout README`` restores README to the latest commit.
(Do not use ``git checkout`` to view a content of a file in a commit,
``git reset`` moves the head of the current branch. The head can be
moved to point to any commit but it's often used to remove a commit or
a few (preferably, non-pushed ones) from the top of the branch - that
-is, to move the branch backward in order to undo a few non-pushed
+is, to move the branch backward in order to undo a few (non-pushed)
commits.
``git reset`` has three modes of operation - soft, hard and mixed.