If a book on software is truly obsolete anytime shortly after publication, then the tech itself isn't truly stable. Read "The C Programming Language", by Kerni

If a book on software is truly obsolete anytime shortly after publication, then the tech itself isn't truly stable. Read "The C Programming Language", by Kernighan and and Ritchie. Written decades ago, still accurate and relevant today. "The Mythical Man-Month", "The Pragmatic Programmer", "Design Patterns"... books like this will always be relevant. Maybe a good rule is to stick to CS books that have been in continuous print for at least ten years.