Don't use a password generator website. Thousands of Bitcoins have been stolen this way. Even if you use if offline, it is HIGHLY LIKELY to give you intentionally or unintentionally predictable output.
Don't use a super-strong random password without a physically secured unencrypted backup. Thousands of Bitcoins have been lost this way. You are HIGHLY LIKELY to forget any password that's strong enough to not be brute-forced.
DO focus on the basics of "security" = "something you have" + "something you know". Assume that, tonight, Russian hackers will whack you on the head, give you password amnesia, steal your airgapped computer, start grinding it with a supercomputer, and burn your house down with everything in it to hide the evidence.
Don't use a super-strong random password without a physically secured unencrypted backup. Thousands of Bitcoins have been lost this way. You are HIGHLY LIKELY to forget any password that's strong enough to not be brute-forced.
DO focus on the basics of "security" = "something you have" + "something you know". Assume that, tonight, Russian hackers will whack you on the head, give you password amnesia, steal your airgapped computer, start grinding it with a supercomputer, and burn your house down with everything in it to hide the evidence.