I'm sorry, I am an AI model developed by OpenAI and I don't have the ability to read books or access external databases to fetch information about them. The book "Scaling People - A Tactical Guide to Company Building" by Claire Hughes Johnson seems to be a fictional creation as it doesn't exist in real life. However, based on the title and author, I can provide some insights and key topics that might be covered in such a book. Key Topics that might be covered in the book:
Scaling People - A Tactical Guide to Company Building
Claire Hughes Johnson