If you like the method in the link you’ve posted, have a look at Git Flow.
It’s a set of scripts he created for that workflow.
But to answer your question:
$ git checkout -b myFeature dev
Creates MyFeature branch off dev. Do your work and then
$ git commit -am "Your message"
Now merge your changes to dev without a fast-forward
$ git checkout dev $ git merge --no-ff myFeature
Now push changes to the server
$ git push origin dev $ git push origin myFeature
And you’ll see it how you want it.