Here's how to use the Quantizer function in Garageband, including some helpful tips, and other things to consider.
Here's how I make Instagram and YouTube videos using iMovie and Garageband. Hopefully, this is helpful to you.
Here's how to make boutique 808s in Garageband
Here's how to mix a song using Garageband's interface
Here's how to write a simple song using Garageband.
A thorough explanation of EQ and how to use it in Garageband