Where can I read more about hardware wallet?
You can read through foe better understanding about Ledger Nano hardware wallet from this two provided links below already discussed here from members:
https://bitcointalk.org/index.php?topic=5284489.0https://bitcointalk.org/index.php?topic=5096882.0I want to buy one for myself but I don't know which one is the best
Just as most of the members have advised to go for ledger nano or trezor as wallet that have multiple crypto support including bitcoin and some and you may also choose to go with bitcoin only supported hardware wallet, this is now your choice to made the decision to what you want, and be careful bnot to give your information on the occasion of making the purchase should in case KYC may be required from the merchant you're buying from.