Right now, ndless 1.7 is oficially released, you can download it fully compiled on ticalc.org. All you have to do to intall ndless is "open" your ndless document on the calc, and it installs itself. Now, you can run programs by simply opening them in the My Documents screen. Ndless programs are usually made in C or ARM asm, if you want to start programming, there is a tutorial on
Hackspire.