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These are helpful but let me add some options.
..for number 1,
If you don't have your personal pc, "
https://www.protectedtext.com/" could help you save the links of your trusted website.
Facebook messenger would also do it and all you need to do is search your name on the messenger search bar then click the chat bar of yourself right there.
..for number 2,
To create a secure password, you may use special characters and it is limitless.
For example, password: vampire1<*.*>
..for number 3,
it is not that necessary to have an authenticator since there are also some consequences of having one too. But some of the wallets gives you the option for authenticating your wallet too.
..for number 4,
You can actually download internet security like "kaspersky.com" to avoid being hacked with software and sites from your browser.
These are the things I would like to add for this. I hope I could help you all and have fun!