LCM for beginners (old version)

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Please note: there is a NEW version of this video. Same material, but MUCH BETTER audio. There's a link in the first 30 seconds so you can go straight there instead.
Easy intro to LCM
Definition. Worked examples using multiple listing method. Not age-specific, skill-based.
If this helps you, please click LIKE and help me too. Thanks!
Click card at beginning to go to revised version of this video, with GOOD audio.
This original video has problematic audio. I tried a different mic, and got rid of it after this. But unfortunately, this video has dodgy sound. I realise that, it sets my teeth on edge too. I thought TH-cam had a fix so you could remove audio and change it, but it seems that this only is taking your audio track off and putting on one of TH-cam's copyright-free pieces of music instead. If you know how to delete the original track and replace with new audio from my computer, I'm all ears. I've matched the recording, so it'll fit, I just need YT to enable a swap-out of creator-audio. Sorry.