Since I have been working with git lately, I find myself searching the web for some little tweaks which are pretty handy during my work with git.
So let's see if there will be a No. 2, 3 or even more in this series.
Today I stumbled over this problem:
checked in a file -> switched branch -> needed this file also in current branch
git checkout [branch name] <file(s)>
Now you have this file in this branch also. It's now like a new file which you can add to your branch.