https://linuxcommand.org/lc3_learning_the_shell.php
One of the more interesting things for me was learning how in depth some of the commands are. For example I wanted to use wget to back up a website that was having issues at the time. I built an advanced command after going through every option and learning what it did.
The only reason I still use my roku is because it has sound leveling capabilities that is much better than anything else I have. I use my PC for just about everything but recently Sling stopped working on the PC or at least the DVR is directing me to download some app? Also Paramount doesn't handle 60fps content (sports) on the PC very well, it stutters a lot.
Windows has sound leveling but I haven't had much luck with it when its really needed. My receiver is old and has only rudimentary sound leveling.
The current URL isn't much of a museum. The internet archive only has redirects from the late 90s but the redirect actually has a museum linked on the homepage you can see it here: https://web.archive.org/web/19981206130746/http://home.brightware.com/%7Erwk/symbolics/
People keep pushing Kagi. You get 100 free searches to try it. So far I haven't had a search result from Google thats so bad I need to turn to another search engine, its just a poor user experience.
I tried to use Startpage and it almost did the trick. It was text search results parsed from google without any of the other crap that shows up in search results these days. However one critical tool was missing - The forums search category. They have other categories like images, news, shopping, etc. I heavily use forum searches when viewing search results and not having it was an instant deal breaker.