Not specifically about Google Scholar, but on topic for how to do research effectively is Lukeprog’s guide, Scholarship: How to Do It Efficiently.
On a similar note: Wei_Dai’s Tips and Tricks for Answering Hard Questions
Not specifically about Google Scholar, but on topic for how to do research effectively is Lukeprog’s guide, Scholarship: How to Do It Efficiently.
On a similar note: Wei_Dai’s Tips and Tricks for Answering Hard Questions