This is a nice book for newcomers to perspective. I had previously learned many of the techniques presented from Basic Perspective Drawing: A Visual Guide, which is focused on technically correct (sometimes excruciatingly so) perspective. If you are looking to calculate the perspective for your tile floor and get it exactly right, then Perspective Without Pain may not be the title for you.
However, it was a nice refresher course, and I did learned about aspects of perspective that I hadn't thought about before; cooler colors farther away (generally), refreshers in atmospheric perspective, and valid warnings against too much rigidity when uncalled for.
The book contains exercises for each principle introduced, and blank or template pages so you can follow along and draw right in the book. I never mark on my books if I can help it, so I hand copied the templates out onto scratch paper and drew on that instead, but it's a thoughtful option.