If noobs have plenty cash, $800 for a Roland DS61 is a good start - or a Medeli AKX10 (if ever restocked).
If noobs have not so plenty cash, like moi, a controller + software (especially FREE software) is da bomba.
If one has an iPhone / iPad, one has GARAGEBAND included. Add controller + you can rock.
. . .
"if you don't mind used instruments, many keyboards will do a decent job as a MIDI controller, even Casios."
A used Casio WK-6500 or 7500 (one version behind latest 6600 or 7600) can be found for under $150.
. . .
I agree that PROGRAMMING SKILLS are lacking. Many guitarists who bought expensive "programmable" FX devices rarely used anything but FACTORY supplied settings. Some of the "killer sounds" of
the Police were due to stock settings of a Digitech GSP2101. And you wouldn't be wrong if you guessed that 99% of the users never tried to wade through the nested menu labyrinth to program it. The latest / greatest are offering simple stomp boxes instead of all-in-one programmable FX arrays.
(Excepting those new fangled digital VSTs, and such, like Peavey Revalver, etc)
. . .
I lucked out when I found a used WK-6500 for $50. Its internal registers and song memory were all unused, but it hadn't been reset to factory specs, so the previous owner probably couldn't decipher the manual. I had to write my own shortcut crib sheet, to crack it. But my DAW does recognize the notes, so it is useful as a basic MIDI controller. Now, if I could map other controls to operate the DAW, that would be even better.
. . .
Other "MIDI controllers" that aren't keyboards, are also coming available in the used marketplace - like the Behringer BCR2000 (out of production) and the Novation Launchpad. They can be added to augment any basic keyboard interface with a DAW.
Of course, Novation's own MIDI controllers already are geared toward ABLETON LIVE (and if you buy one, they include a LITE version).
Here's an older version of the LaunchKEY, with sliders, knobs, and touchpads, that are useful in ABLETON LIVE.
The LaunchPAD, is an array of velocity sensitive pads.
That is what the "new kids" are using instead of a KEYBOARD....
Scares the beejeebers out of old timers like me.