Bip39 github https://andersonehmh757.timeforchangecounselling.com/getting-your-first-bip39-passphrase-idea Even though it works by using BIP32 approach you can still import BIP39 seeds into Electrum wallet. Also besides BIp32 there is BIP44 Model which some wallet use to the era of seeds. He can be the creator of by far the most welcoming and aesthetically pleasing, https://topsocialplan.com/story5998252/bip39-dot-map-5-essential-elements-for-bip39-word-list-pdf-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw