What should I learn to not be behind as a Computer Science major?

<p>Java remains a very beginner-friendly programming language. The syntax is easy (in my opinion), and apart from that I’d gain expert knowledge in some popular scripting languages, i.e. PHP, Perl or Ruby. PHP is one of the most widely used server-side scripting languages and is one of the most widely used languages in general as well. If you have real expert knowledge with PHP, its libraries and some of the frameworks, as well as with Java, you won’t have a hard time finding a job, unless you’re not planning on being a software engineer, data scientist, systems engineer, etc.</p>