Make tracks that sound finished

FL Studio if you make beats and electronic music, Cubase if you record instruments and voices. FL Studio is built around patterns and a playlist, which suits producing from scratch. Cubase is a linear recording setup, and about half of its course covers capturing audio through an interface. Both take you from an empty project to a finished, exported track, and one subscription covers both.

No, but you do need headphones or speakers you know well, and not laptop speakers. They do not have to cost much. They have to be something you have listened to enough music on to have a reference. A MIDI keyboard is optional, since both instructors draw most parts in with a mouse. An audio interface matters only if you are recording a microphone or an instrument.

No, neither music production course assumes any theory. Both teach the parts you use as you need them: chords under a melody, where a bass note sits, why a section feels like it has arrived. If theory itself is the gap you feel, a free tutorial series on scales and chords will fill it faster and cheaper than a production course will. Come back when the software is the problem.

A few weeks, if you build one alongside the course rather than after it. Both courses are structured around completing a song instead of collecting techniques, and the FL Studio course spends twelve lessons on a single track, from first beat to final mixdown. That stretch is where loops turn into finished music. If that sounds like too long for one song, this is not the course for you.