The Reason folks are giving away a 30-day free pass for Groove3.com (site with a ton of quality video tutorials). It’s unlimited for a month (you can’t download videos, just stream them), and while there is sadly nothing for Renoise, they do have a lot of material for other software and on general production/audio topics:
https://www.propellerheads.se/groove3offer/
The code works until July 31st, but you get the full 30 days starting at the day you redeem it.