Manufacturer’s website
https://www.roland.com
Useful links
Roland TR-8 Cheatsheet
http://airainfo.org/files/tr-8_cheatsheet.pdf
Roland TR-8 Various Setup
https://airainfo.org/index.php/tr8
The Ultimate Guide to the Aira TR-8 Rhythm Performer
https://www.rolandcorp.com.au/blog/ultimate-guide-aira-tr-8
TR-8 Updates, Drivers and Manuals
https://www.roland.com/us/support/by_product/tr-8