Welcome to Michael's blog. Michael Andrew, (aka Michael The Maven) is a freelance producer, photography instructor, tech innovator, and when needed, disaster aid specialist. Disclaimer: Michael is a participant in Bhphoto & Amazon affiliate programs that provides an advertising commission if you purchase through links on this website.
Blending Modes Explained - Complete Guide to Photoshop Blend Modes
This video meticulously goes over all 27 Photoshop blending modes. It was created by Photoshop Training Channel. This is very valuable information offered here for free. I had to share it with you guys. It's a kind of long video at 41 minutes but well worth the time if you're looking to understanding blending modes.
If you visit the YouTube link he also includes timestamps for each specific mode so that if you only need help with one or a few you can jump around quickly. Hope you find it useful!