Writing an introductory book on a topic like web programming is always difficult because the audience is varied. The readers will range from complete newbies who have never written a program before to experts in other technologies writing their first web pages, or perhaps even experts in other web technologies using these technologies for the first time.
The MySQL section was a great, but somewhat short, introduction to relational databases. A little more depth might be helpful. Many volumes have been written on relational databases, elsewhere, however.
2017: The Year of Golang
4 months ago