What platform are you using?
If you want to learn Java, then you really should. It's a very good language. You can get the JDK here: http://www.oracle.com/technetwork/java/javase/downloads/index.html
There is a language that I believe lets you use Java Libraries but it like Python which is called Jython(I have never tried it) http://www.jython.org/ You may feel more at home using it.
If you just want to target the Windows Platform then you may want to look into C# or Visual Basic, although there is the Mono Framework, It's not complete and some stuff don't work. I believe they have it working up to .NET 2.0
C and C++ may be too difficult.
Another scripting language that is popular is Ruby http://www.ruby-lang.org/en/ , many people enjoy fighting over which is better(Ruby vs Python) just like (Java vs C#)
I highly recommend this page for learning any language on it: http://thenewboston.org/tutorials.php
So then next language you should target I think ought to be Java or Ruby. Make sure you don't get over your head though, you may have learned Python easily but if you take a look at Microsoft's C++/CLI you may find it way too difficult. look here: http://en.wikipedia.org/wiki/C%2B%2B/CLI
Obviously that is one of the harder languages but you get the point.