For those who wonder where I get the tips it is pretty simple: from actual research.
Occasionally readers send me tips, but the vast majority come from my own research. If something confuses me or is difficult to use to understand, it may become a tip. I don't copy them from books, newsletters, or other blogs. In fact, the only time I write tips is when I'm working on my own research or my own writing.
For that reason, you may see similar tips from time to time. I never copy and paste and old tip, but some ideas are worth repeating.
And all of us can benefit with a reminder from time to time.
And thanks for reading!