To add to this:

Michael Horn Does a good amount of explaining different Linux software out there. Similar to Linux Experiment without the weekly news.

TechHut Also has some good videos but you have to look through his library.

No it’s a local application like Libre. Can also be ran in the cloud.

Balance on random things when I’m walking. Also imagine racing my cart sometimes when I’m at the store.

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Mostly privacy. Signal is completely encrypted end-to-end. Telegram is only encrypted when choosing private chat with one person. Group chats are not encrypted in telegram, they are in signal.