unable to record from keyboard

i have casio ctk 2300 and i want help how i can record from my keyboard to audacity . I have 3.5 mm jack cable . can it be recorded from that

Does the keyboard have a socket for that?

Probably the easiest way to record that keyboard is with a microphone about 4 cm above and pointing at one of the speakers (or better - a pair of microphones, one above each speaker).