Python Tutorial: How I got started many years ago
Python Standard Library Reference: This page links to information on Python builtins.
Python Module Index: Note that individual modules have predictable url's, like this one for the subprocess module: https://docs.python.org/3/library/subprocess.html. A bit unweildy for typing manually, but you can create a keyword search for it.
KeePass: The password manager I personally use. I don't recommend it. Even for doing everything locally with free software there are probably better choices, but this is familiar to me.
1Password: A commercial password manager. This is what I'd recommend for most people, although I only use it at work.
About your Secret Key: A security feature of 1Password that I find interesting, and that isn't shared by some other commercial password managers. It helps protect data in case a malicious actor gains access to encrypted password databases on 1Password's servers.
Firefox: The web brower I use. The only notable remaining browser engine that isn't based on Google Chrome or WebKit (which Chrome was based on). I would encorage anyone to use it, both because of the problems with monoculture, and because Mozilla Foundation does a much better job of protecting privacy than Google, an advertising company.
uBlock Origin: An ad blocker for Firefox. I recommend everyone use an ad blocker for security reasons (there are plenty of other reasons, but that's the strongest one). Ad networks are where average web users are most likely to encounter hazards like scams or malware, so cutting them off reduces one's risk significantly. This one in particular is so powerful that Google reduced the functionality of Chrome's addon support so it wouldn't work, and uBlock Origin's developers had to make a less-featured version for Google Chrome users.
Keyword searches: A feature that lets you create shortcuts to a particular "search" in your address bar. For example, by default you can type "wp Firefox" in the address bar to find the Wikipedia article for Firefox.
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