How can i record Keyboard music in audacity

I am 15 and i am not allowed to get software with Installer so i decided to get Audacity as my DAW , I have a Yamaha353 keyboard , now this Keyboard can produce a considerable amount of music , i wanted to ask , is this combination enough to produce SOME kind of music , I Own a YouTube Channel(which i don’t want to link or mediators will think im promoting it),and its very small and i want to make music as a background. Now the actual question is How can i record my keyboard sound , Only internal sound for this purpose.