Website Development
CSS (Cascading Style Sheets (CSS) used for describing the presentation semantics (the look and formatting))
JavaScript (implemented as part of web browsers so that client-side scripts may interact with the user, control the browser, communicate asynchronously and alter the document content that is displayed)
PHP (PHP: Hypertext Preprocessor - server-side web development )
PDO (PHP Data Objects – is a database access layer providing a uniform method of access to multiple databases)
Software development
Java (Eclipse or Netbeans as IDE)
C++ (Visual C++ Studio)
Visual Basic (Visual Studio)
There is no such thing as a 'best' programming language, you use whatever language is most suited to achieving your goals. I would however start with a language that has a common syntax and is useful in the long term, this of course depends on the specific area you're interested in.
Some languages I can suggest are: C, C++, C# and Java (Very similar syntax, Java and C++ in particular are major languages)
Python, Perl, Ruby, PHP, JavaScript (Great for web development but can be used for other stuff as well) Everything else just take your pick, once you learn one picking up others is easy.
