Welcome! I'd like to echo the sentiments stated above. We're aware our documentation isn't complete, and tutorials are certainly a very effective way to introduce people to game making, and to Construct.
From an attempted non-biased standpoint I think Construct is well suited for classroom usage, in that it is free, simple to use (no scripting, no heavy learning) and powerful. Obviously it has a learning curve the same as any other tool, but we've worked hard to keep it to a minimum (beyond learning the interface and becoming familiar with the event system).
We're definitely aiming to be at a 1.0 release sometime around this summer, and naturally the documentation should develop by then, as will example games/tutorials, I'd expect.