There are some more general videos, check out the tag "Seed Phrases (General)" and "Signing Devices (General)," however, I'm trying to keep the list of videos a little more lean and focused. I'm not sure the typical noob needs to know mining in-depth, or elliptic curve cryptography, or SHA 256. But I'm open to adding more, general videos, particularly if they have very hands-on key management advice.