Hey @srangel. Great insight and good questions!

Maybe I should stop thinking that I'm by myself.

A common technique is to pretend you're talking to a friend and just converse as you would normally. That way you act and feel more normal, plus you've probably been talking to friends your whole life so you have a ton more experience in front of friends than in front of the camera, so if you can successfully get in that "talking to a friend" mindset you will realize you're much better at this than you thought!

When I upvoted this video, the $ amount didn't increase

Steemit pays you out on a post after 7 days, so any votes on content or comments 7 or more days old won't change the dollar amount. So sometimes what I'll do if I want to upvote someone for old content is just check out their newer stuff and upvote something <7 days old. Or you can comment on their post and upvote their response (since that's less than 7 days old). Hope this helps!

I can't comment in d.tube. Is that a known problem?

In order to comment on a dtube video you have to login to dtube. What I do to get around this is just comment on the steemit post (and it automatically cross posts to dtube). In my experience I end up needing to re-login to dtube fairly often so it's easier for me just to comment on the steemit post instead.