Found an easy way to locate the Custom Brush Library - go to the hamburger icon at the very top right hand side of the Brush palette, select 'Open Brush Library' then 'User Defined,' it should be there (was trying to find my Custom Brushes, then remembered where Custom Swatches/Patterns are stored, its the same in Brushes). BTW I am working with Illustrator 2020 on Macintosh 🙂
Would using the Brushes.psp file be a good way to maintain your brushes organization across two computers? I am thinking to make a copy of Brushes.psp on my workstation, upload it to my CC cloud storage, then back at home use the file to overwrite brushes.psp on my laptop, so I can carry on working with the same brushes organized into folders. Then if I make more changes to my brushes organization, I can send the file back to my workstation.
Is this the best way to do this? I just want my brushes organized into custom folders nicely, and for that to be shared across all my computers, and for changes to update.
Thanks. I'll try this tonight so if I don't update the post just poke me and I'll let you know how it goes.