Is there a website describing TI Nspire platforms?

[StephenG1CMZ]

I'm used to using emulated Numworks (and previously HP Prime) with the convenience of it always being in the one box and a usable cut-and-paste.
I wouldn't rule out real device with real keys (but which usb cable and OTG cable have I got with me? Or does it need a PC, like Casio?)
But I'm looking for something with Python, like Numworks (or the latest CX II).