- Handle your crypto on a burner laptop which is only used for handling crypto wallets, this eliminates getting your crypto stolen by a trojan you may of downloaded.
It should be an air-gap system not just any laptop that you only use for cryptocurrency wallets. That means no internet, network cable, Bluetooth, USB disks,...
That means for beginners it is best if they buy a hardware wallet if they know they can't create a secure cold storage on their own.
- Split your crypto portfolio ~~
Nobody should have a "crypto portfolio" since that makes no sense to buy things that are useless, get dumped in long term and are guaranteed to dump each time bitcoin has a major fall or rise.
This is specially true for beginners who you want to target, they should not buy any altcoins at all!