With a "Hello world" :P
If you're thinking about making money the languages to choose would be Python, Java or C#, the latter two being standard these days in enterprise software.
If you're into 16-bit through current consoles C might be where to start (but on a PC).
If instead you're into PC games jumping directly to C++ would be fine.
If you're into web development Python, Perl or PHP would be what to go with.