I think #Cashu allows as #Lightning and #Liquid to adapt to high commission environments on the main chain and small payments. I consider #Cashu layer 3 of #Bitcoin since it depends on #Lightning.

The advantages of #Cashu are that token sending fees are free and it has greater privacy than #Lightning. But #Cashu also depends on mints, which in a simple way to explain are nodes who independently exchange #Cashu tokens for Sats. That is why we must trust a third party involved to maintain these mints. Just as #Liquid can be taken as a federation.

I would tell you to make your own experience with a few Sats by watching that tutorial and trying a simple #Cashu wallet like nostr:npub1dx5q2el8nd4eh3eg9t2e25fd7zuqg7zxz6ldkc3uzgh66ss2yc6st288sj