If you haven't been doing any self custody would recommend starting out with small amounts using hot phone wallets first. This is also what nostr:nprofile1qqspnzgrfett3asxcuj0gksje6z2zxzpvgd27uvz58m9vsuqh8zzw6cpzamhxue69uhhyetvv9ujumn0wd68ytnzv9hxgtca2eex7 recommends.

Store your seed phrase in a password manager (but do NOT do this for cold storage wallets), and practice deleting the wallet and then recovering it. Send some money around, maybe back to yourself. Track your transactions on mempool.space.

After you get comfortable, study secure seed storage and graduate to hardware wallets.