This is a very good online series of video courses for music production and composition. Nathan James Larsen has a popular YouTube channel that gives solid practical advise from a professional Producer's experience. The Accelerator course goes into more depth in things like song structure, composition, pre-production and a whole new production module.

The mixing section isn't emphasized as much as musicianship is, which is refreshing, since a good song isn't made of just piling on a bunch of mixing plugins randomly... personally I find the videos lessons geared more to Logic Pro users... especially for people unfamiliar with a DAW—they may need to do extra research on YouTube on how to do similar editing and FX in Ableton, Studio One, FL Studio, Cubase, or ProTools. However, Nathan keeps adding new content to the course which is outstanding...and something I haven't seen from other online production courses.

The best part of the course is the Feedback Fridays, where they play member's songs and give professional feedback. I will say, like any course, the best way to get the most out of it is to actually watch the videos and try what he covers.