Yes you can record it but it's a pain to record with the keyboard. To record from keyboard just hit the record button (to the right of the stop button, it'll be orange if it's active) and click play. It'll start off a short metronome count so you get the beat, then it will go into playing the song/pattern and it will record anything that is played via keyboard. I just don't like recording with the keyboard because it's easy to get sloppy and off time.

I just dabble in FL as a hobby, and I don't really know a lot about it, but I've made a couple things here or there that I was pretty happy with. I mainly mess around with the string patches and various Sytrus instruments for fun.