This book contains very useful projects for existing homes, and the selected topics will be helpful for many.
The book is clear on the codes for safety, and remember they are also important for practicality and consistency, as homes changes owners.
The text and illustrations are excellent, as is normal for B&D books.
Even if you don't want to do any of the projects here, the book is highly educational in a practical way.

Read this with my husband. Being a homeowner I wanted to learn more and understand how our house works as it was wired backwards and we needed to have it changed.