"Hopefully part a series [indistinguishable] beginners"
don't know what you said
Why do you say AE isn't an animation software? Then you imply you should use another program if you're familiar with it, but you're making an animation tutorial in AE for people who are unfamiliar with it. I'd just take out that whole part. It's completely unnecessary.
At the very beginning, why can't you see the whole UI?
Just get right to it. There's about 45 seconds in the first minute that you could cut out. "Hey I'm such and such, This is a tutorial for beginners, lets get started. Here's the UI." Terrible example I know, but you get the idea.
Don't need to mention all the advanced stuff. I know you're just going over it in passing, but a beginner has so much information to worry about, they won't remember it anyway. For example all the tools, you don't need to name them all, they can hover over all of them to see the names. Also the bits per color button, they don't need to know that, just don't even mention it.
"At the top of our composition window, we can name our composition, which we will name moving circle." proceeds to type moving circle
That's a lot of repeating yourself. This is one of many examples where you could save several seconds (which add up) by just cleaning up the script.
This is what I like to call YouTube gold
What? That's just a weird thing to say. Just say it's full HD resolution.
You can also zoom by using the scroll wheel. That's way easier than any other method unless you want it to fit.
Things on the top of the asset pile are going to appear first. And things on the bottom of the asset pile are going to appear last.
I'd change that to 'front' and 'back' instead of 'first' and 'last' for more clarity.
You can keyframe even time itself.
I wouldn't say that. I understand what you mean, but someone who doesn't know AE won't understand. You might make a joke that you can't keyframe time itself, though you can pretend to by keyframing the timing of a layer.
You said "Then press the stopwatch" twice.
I'd recommend suggesting to not use the Media Composer Render Queue, it has issues in the current version of CC.
Lossless? that's terrible (ok, not terrible). I realize that you want this to be simple, but instead of saying you usually leave it there, say there are other options but you're gonna leave it there for the purposes of this video.\
Overall, it's good. I think you can tighten it up a little bit, but after the beginning it gets much better and you did a lot of things in the right order to show the features and things you wanted in a fairly seamless way. My criticisms are things to think about, just opinions but I hope you at least consider them.
Finally, I want to leave you with one more thing. Why are you making this video? It's an important question that you must answer. There are already plenty of places for people to go to learn AE as a beginner, including this fantastic link in the sidebar of this subreddit. If you're making it because you think you can do better, that's a good reason. If you're making it for practice, that's a good reason but you might consider making something different for practice so you don't bloat this area of videos too much. If you're doing it for another reason, keep going. I'm not saying not to make it, too many people try to copy the success of others without improving on it and it just bloats the internet with useless stuff and I don't want you to be another one of those guys.
Good luck and a great start! Keep up the good work.