You worked on some part of Linux kernel. It works great. Now, how to generate the patch series and send it out for review? For this, I always used to generate diffs, create a set of draft mails (one for each patch) in KMail or Thunderbird, and send all these mails one-by-one. This workflow quickly became a big headache. Then I learned Git (and some related tools) to do all this from command line a