hey, ran into your site via crystalline -- never been into videos; but it's well laid out. Wanted to let you know re: YouTube downloading about (a) 4k YouTube To MP3 (I swear by it and it has a patch to get full features free; linked on my site @ /miscellanea/techystuff) and that there are Firefox plugins for Youtube downloading which avoid ads. https://addons.mozilla.org/en-CA/firefox/addon/youtube-to-mp3-wext/
Thanks a ton for your comment! I will look into this and see about adding it to be guide <3