Reverting to a specific commit based on commit id with Git? [duplicate]

This question already has an answer here:

• How do I revert a Git repository to a previous commit? 42 answers

With git log, I get a list of commits that I have made so far.

commit f5c5cac0033439c17ebf905d4391dc0705dbd5f1
Author: prosseek 
Date:   Fri Sep 3 14:36:59 2010 -0500

    Added and modified the files.

commit c14809fafb08b9e96ff2879999ba8c807d10fb07
Author: prosseek 
Date:   Tue Aug 31 08:59:32 2010 -0500

    Just simple test for core.editor.

... etc ...

• How can I revert it back to a specific commit? For example, what should I do if I want to go back to commit c14809fafb08b9e96ff2879999ba8c807d10fb07?

• Is there any other/better way to go back to a specific commit with Git? For example, can I put some label of each commit to get it back with the label?