Simple, common sense stuff that might be good for someone who is financially illiterate.
I did like the accounting vs budgeting concept, which was new for me. Traditionally I have used a budget, but the thought of just making sure you know where you money is going and ensuring your net income is greater than your expenses is interesting. It doesn't seem optimal but there is some value in there somewhere.
This short book is fine, but his YouTube channel is excellent and much more advanced.