Aside from the crunchy brown paper, and a girl sporting a Cosby sweater, this isn’t too bad on the teen dating advice front. Yes it is outdated, but the advice is pretty generic. Look for qualities that are about friendship, be respectful, etc. A lot of the book is devoted to understanding social situations. There are tips on throwing a party, entertaining a date, going to prom, and other group activities as well.
However, it is glaringly out of date in terms of technology and social norms. I also think it is important to reiterate how important cover art is to getting someone to actually pick up the book. Fast forward 10 or so years, and the book looks dated. After 30 years, it is a book suitable for this blog.