It’s good, but the authors could have done better. The books for an older version of Eagle, so a lot was wrong in the instructions (not the authors’s fault). My problem with it was that the instructions were incomplete. If they showed you how to use the UI in some way, and later referred to that UI element. They didn’t repeat the info - so, you only get the info once, not once in intro and later when you actually use it for the first time. I also noticed that the authors fell into the same trap many authors of technical content do. They provide information in the wrong order. Don’t tell me what I’m looking for, the how to find it, give me the instructions in the exact order I need them in. Look here, then here, then click on that rather than click on that, looking first here, the here to find it. Makes sense?