Tried at least three different book lights, and they weren’t of any use. Couldn’t use the ones that clip on the book. Had one that laid over the page, and didn’t like that. It was just easier to use the Kindle. I double a pillow up, set the Kindle on it, and read.
I don’t like the clip-on lites at all. My lamp, on the night table works well for reading, as it’s tall.