Which is the best programming language to get start?

Does anybody know Which is the best programming language to get start?

Python. Python has everything you need and then some. It runs on every platform (Linux and OS X boxes already have it installed), and it's free.

Python (through the use of forced whitespace) forces them to learn to write more readable code (I remember taking C++ in high-school, the stuff people wrote would make your eyes bleed). The language has everything your students might need for intro programming (for loops, functions, etc). If they want to continue on will Python later (or you want to offer advanced classes later) it has bindings for all sorts of stuff (XML, OpenGL, QT, GTK, and many many other things). It also has all sorts of handy stuff like an interactive interpreter, a "for each" loop, and more. It's object oriented too.

Look into Python. It's easy to use and would make a great stepping stone if they want to later use a language like C/C++/Java. Or (as I said) Python is great in and of its self and they can stick with it.