Garagebandland

Three ways to use garageband;

Using MIDI  technology (there are MIDI keyboards at every station in the 013 lab)...

Using pre-recorded loops...

Or multi-track recording...

Software instruments, loops, and multitrack recording...used individually or together. The possibilities are endless, especially when you consider that a project may start with a recording conveniently made with your phone. These how-to videos are all by... 

https://thegaragebandguide.com 

which has exhaustive and always up to date info on using garageband.

Before you export your garageband track try some basic mastering. I discovered the genre-based presets are still there and that may be all you need. Click on master and output on the mastering window at the bottom of the interface. If you double click on compressor, exciter, and limiter and if you go past 'manual' you will see presets. From there you can really beef-up your track. Here's a really well-done article on mastering...

 

https://producersociety.com/how-to-master-a-song-in-garageband/