On the tutorial? You're expected to press the wormhole/checkpoint button on the bottom left. I'll have a look at the tutorial. It's difficult, because like you said, there is so much we need to explain ...
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Generally, you could consider whether or not you need to spell out so much of the tutorial content all in a row like that. It would be far more enjoyable if you could teach us a couple things, and then have us play with them a few times before we move on to a new concept. And that would help with the sense of overwhelming educational overload, too!